Famous mathematicians - 2021 calendar

famous
mathematicians

2021 CALENDAR

December 2020 | January 2021

28 week 01 4 week 02
Monday Monday
29 Tuesday
30 Wednesday 5 Tuesday
31 Thursday 6 Wednesday
1 Friday January 2021 7 Thursday
8 Friday
2 Saturday 9 Saturday
3 Sunday 10 Sunday
Grigore Constantin Moisil
Born in Tulcea (RO) 10/01/1906
Died in Ottawa (CA) 21/05/1973

RMaologmiesabilnrwaiaiacnslomaglasictoh,aMemmVa-eatmligcbeiaebnrr,aoc,faotnmhdepduAitfcefaerdrpeeinmotnyiaeoleefrq,Suacanietdinomcneses.mHobefeBirsoovlofiegtwnhaeedaRnaodsmothafentihfaaentIhnAetcerarodnfeacmtoioymn. paHulisItnesrretsistceuiaeternccohefwiPnhaRsiloommsoaapinnhilayy.. in the fields of mathematical logic,
In 1996, the IEEE Computer Society
raawisairndgetdhehifmirsptogsethnuemraotiuosnlsyothfeRoCmoamnpiauntecroPmiopnueteerrsAcwieanrdti.sHtse. played a fundamental role in the development of computer science in Romania, and in

January 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

January 2021

11 week 03 18 week 04
Monday Monday

12 Tuesday 19 Tuesday
13 Wednesday 20 Wednesday
14 Thursday 21 Thursday
15 Friday 22 Friday
16 Saturday 23 Saturday
17 Sunday 24 Sunday

Kurt Gödel Died in NBeowrnJinerBsrenyo((UCSZ)) 1248//0014//11997086

Oamrnoeesatomfcoatnhsgeestphrtiehnechiiarpnaodlrfifguoilunonafldlseatrnismdomuflautrshk.etInmhehooidsreeprmnh,islominseottpwahmeicnaattilhewethmorcaketiGnctöaudlreeyrlamfoianrtmmhuealmathtaeetdmicasan,tibdcuadtlelhofiesgniwcd.oeHrdkemtisoauwtchidheeemldyaetkivnceoarwlyPnflaifetolodrnhoiisfsmmIn,actthohememvpileaetwtiectnahelaslotsgmTicha,etifhoeirtemwmaastsi,cwnsohitsicihna
dOenstchreipbtaivseissocfietnhcaet,voireawltpeorinnatthiveelalyidththeevfieowuntdhaattiothnefocrotnhceepprtoogfrmamatohfecmoantciceapltturaultahniaslyosbijsecwtiitvhein. set theory.

January 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

January 2021 | February 2021

25 week 05 1 week 06
Monday Monday February 2021

26 Tuesday 2 Tuesday
27 Wednesday 3 Wednesday
28 Thursday 4 Thursday
29 Friday 5 Friday
30 Saturday 6 Saturday
31 Sunday 7 Sunday
George Titeca
Born in Drobeta-Turnu Severin (RO) 04/10/1873
Died in Bucharest (RO) 05/02/1939

Romanian mathematician who made important contributions in geometry. He is recognized as the founder of the Romanian school of differential
HȚgeiițsoecmicoaentdtrriysib.cȚuoitțvieoeincresadrwearponrteeesweacnbatotutehtge4ob0rye0goaifnrtsniuicnrlgefasoc,feoasfnwaenhwdicachhn9ae6pwtaecreraitsnecmgieoanrtythifoeifcmcpaurtorivcjeescs, ntwsa,hmmiceohlysnttohaweddacrfaefrisrnyseihndigsifpnferaormebnelet.mialsgoefodmifefetrrye.nHteiaal glseoosmteutdriye.d webs
in n-dimensional space, defined through Laplace equations.

February 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28

February 2021

8 week 07 15 week 08
Monday Monday

9 Tuesday 16 Tuesday
10 Wednesday 17 Wednesday
11 Thursday 18 Thursday
12 Friday 19 Friday
13 Saturday 20 Saturday
14 Sunday 21 Sunday
René Descartes
DieBdorinnSintToocukhraoilnme((SFRE)) 1311//0023//11655906

Hdwuehbewbreeadsmtaihnhedig"Fahanlytdhinbeforlduoeyf nMatroieadl ecFrornennPschidhileoprsehodilpothsoyo"hpaahnveder,tdmhiesat"tFihnaectmtheaetrsioscfeiaMnnc,oepdshe,yronsniMceisabttehaiennmgdawcthirciatsrea."rc.HtHeeeriisziseadlksnoboykwntnohwofounrgahhsits,Ctianhrfetlueoestniuhtseia.rl bayrgsupmaetinatlsefxotrenssuibosnt.aHnecehadsuabliesemn,
Dtheesoctahrteersthfiersvteprtriocpaolsloecdattihoant,ewahcichhphoainvteincotmwoedtoimbeenksnioonwsncaasnCbaertdeessiacnribceodorbdyintawtoesn.umbers on a plane, one giving the point’s horizontal location and

February 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28

February 2021 | March 2021

22 week 09 1 week 10
Monday Monday March 2021

23 Tuesday 2 Tuesday
24 Wednesday 3 Wednesday
25 Thursday 4 Thursday
26 Friday 5 Friday
27 Saturday 6 Saturday
28 Sunday 7 Sunday

Jiří Anděl Born in Jenišovice (CZ) 07/03/1939

HOPrenaeigsoutfeh,tewhaehuemtrheooshrteoimwf npaisonrestttayundsticepiederntstooiofni.cspoafpCezrescahnmd saethveemnabtoiocsksawndritstteantiisntCiczse.cHhe, is working at Faculty of Mathematics and Physics of Charles University in
two of which have been translated into German.
His work is aimed to time series modeling. He has written books o make popular the topic of statistics and probability.

March 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

March 2021

8 week 11 15 week 12
Monday Monday

9 Tuesday 16 Tuesday
10 Wednesday 17 Wednesday
11 Thursday 18 Thursday
12 Friday 19 Friday
13 Saturday 20 Saturday
14 Sunday 21 Sunday

Petr Vopěnka BDoierdn iinn PPrraagguuee ((CCZZ)) 2106//0035//21091355

He was a Czech mathematician. In the early seventies, he developed alternative set theory (alternative to the classical Cantor theory), which he
subsequently developed in a series of articles and monographs. Vopěnka’s name is associated with many mathematical achievements, including
Vopěnka's principle. Since the mid-eighties he concerned himself with philosophical questions of mathematics (particularly vis-à-vis Husserlian

pVhoepněonkmaesneorlvoegdy)a.s the Minister of Education of the Czech Republic (then part of Czechoslovakia) from 1990 to 1992.

March 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

March 2021 | April 2021

22 week 13 29 week 14
Monday Monday
30 Tuesday
23 Tuesday 31 Wednesday
24 Wednesday 1 Thursday April 2021
25 Thursday
26 Friday 2 Friday
27 Saturday 3 Saturday
28 Sunday 4 Sunday
Stanislaw Ulam
Born in Lemberg (PL) 03/04/1909
Died in Santa Fe (US) 13/05/1984

hEOadndweaaorfvdetThryeelslmeurocccsaetmsbsreiflluuialpncwtarPietohelritshthheemTraeet.llhHeere–mjUoaliatnimecdiadtnehsse.igHMnea,wnwhahasictathaminsePtmhroebjeebcratoswfisthhficoehrLawvlliavtshStechrhemoUoonSl uo'scfwlMeaaarrtthwimeemeapeaotfifncossr..tUItnloatmchreeb1aet9leie3tv0he’esdahttehoawmteincnutbcotleomatbrh.weSeUtaanpnitoisenłdawwSotUualltdaemdseaatnneddr
ahnudmsaungsgferosmtedcrneuactlienagrmpuililtsaeryprcoopnufllsiciotns.. He also discovered the concept of the cellular automaton, invented the Monte Carlo method of computation,

April 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30

April 2021

5 week 15 12 week 16
Monday Monday

6 Tuesday 13 Tuesday
7 Wednesday 14 Wednesday
8 Thursday 15 Thursday
9 Friday 16 Friday
10 Saturday 17 Saturday
11 Sunday 18 Sunday
Leonhard Euler
Born in Basel (CH) 15/04/1707
Died in Saint Petersburg (RU) 18/09/1783

aLmesaotnnoyhpbaorrladongEcyuhaleenrsdwoaafnsmaalaySttihwceinsmusammtibcaestrh, tsehumecaohtryiac.siHainne,fapinlhsityoesisincitmisroat,dlacusactlecrdounlmuosumcaehnrd,ogfgetroahgperhmatpohhdeeeorr,rnylo,mgwiachtiiahleneamalnsadotiecmnaaglktineinergmerpinwioohnlooegemyriaandngedcinomonpttoarirtbtiouantni,topnaasnrdttiocinusflleaurveleynrtfaioalrlbmdraisanctchohevemesraisetusiccianhl
tahneaolyrsyi.s, such as the notion of a mathematical function. He is also known for his work in mechanics, fluid dynamics, optics, astronomy and music

April 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30

April 2021 | May 2021

19 week 17 26 week 18
Monday Monday
27 Tuesday
20 Tuesday 28 Wednesday
21 Wednesday 29 Thursday
22 Thursday 30 Friday
23 Friday 1 Saturday May 2021
24 Saturday
25 Sunday 2 Sunday
Carl Fridrich Gauss
Born in Braunschweig (DE) 30/04/1777
Died in Göttingen (DE) 23/02/1855

JasonchtieiaqnnucnietCy. S"a,orGlmFarueisetisdmrhiecashdrGaenafeuersxrsecdewptaotsioaansGatlehirnemfPlaurneinnmcceaeptihsnemmmaaatnthyiecfmiaienaldtaiscnodorfpumhmyas(tLihcaeitsmitnawftohicros"tmahnaeddfeoscrseiiegmnnocifseict,aaonnftdmcisaotnrhaternimkbeuadttiioacnmiasnotsno"g)mhaainsndtyo"trfyhie'esldgmsreoinastmteianstfthlumeemanttahitaeilcmsaatnicdian since
Hmeathhaedmcaotnictriaibnust.ions to number theory, geometry, probability theory, geodesy, planetary astronomy, the theory of functions, and potential theory.

May 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

May 2021

3 week 19 10 week 20
Monday Monday

4 Tuesday 11 Tuesday
5 Wednesday 12 Wednesday
6 Thursday 13 Thursday
7 Friday 14 Friday
8 Saturday 15 Saturday
9 Sunday 16 Sunday
Otakar Borůvka
Born in Uherský Ostroh (CZ) 10/05/1899
Died in Brno (CZ) 22/07/1995

HaOnetdaakatatfretBenrodgreůrdvakdaatuagwtraiaosmnamhCeazrsestccuhhdmoieoadltimhneaUmthhaeetrmisckaiaétniHcbsreaasdntišdktnpěoh. AwysfnticetsordiatathyFefaoscrtuuhltdisyiewodfocsrikcviiielnengncrgeaipnohefetMhrieansogarayrty. kImUpneivriearlsCitzyecinhBTrencoh.nHiecrael UhneivwearssiatyssoifsFtaranntzoJfoMsaetpyhá,šinLBerrncoh
aHnisdwEodrukawrdaČseacimh.ed to graph theory, differential geometry, abstract algebra or theory of differential equations.

May 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

May 2021

17 week 21 24 week 22
Monday Monday

18 Tuesday 25 Tuesday
19 Wednesday 26 Wednesday
20 Thursday 27 Thursday
21 Friday 28 Friday
22 Saturday 29 Saturday
23 Sunday 30 Sunday
Suzan Kahramaner
Born in Istanbul (TR) 21/05/1913
Died in Istanbul (TR) 22/02/2006

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stoamtheeyfeoaurn.ding of Balkan Union of Mathematicians, which was realized with the participation of Romania, Yugoslavia, Greece, Bulgaria and Turkey in the

May 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

May 2021 | June 2021

31 week 23 7 week 24
Monday Monday
1 Tuesday June 2021
8 Tuesday
2 Wednesday 9 Wednesday
3 Thursday 10 Thursday
4 Friday 11 Friday
5 Saturday 12 Saturday
6 Sunday 13 Sunday
Leonardo Fibonacci
Born in Pisa (IT) around 1180
Died in Pisa (IT) around 1250

Leonardo Pisano called Fibonacci was an Italian mathematician. He is considered one of the greatest mathematicians of all times. With other

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of it, that is 0, 1, 1, 1, 2, 2, 3, 5, 8, 13, 21, 34, and so on.
The world day of Fibonacci, known all over the world as Fibonacci Day, is celebrated on 23rd November.

June 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30

June 2021

14 week 25 21 week 26
Monday Monday

15 Tuesday 22 Tuesday
16 Wednesday 23 Wednesday
17 Thursday 24 Thursday
18 Friday 25 Friday
19 Saturday 26 Saturday
20 Sunday 27 Sunday
Alan Turing
Born in London (UK) 23/06/1912
Died in Wilmslow (UK) 07/06/1954

HTBurisirtiimnsgha’stmhfaeatmmhaeetmaicsaatalicbmiaaacntkhwgerhomouainstdiochfiateenlpnceacdnadlbleeevdaic"tTethrteibefucathtenhdieqtruooehfsicsinofmcoorpmdueutelbarrtesinacgkieionnfgca,esl.g"poercitihfimcasllaynindWcoomrldpuWtaatrio2n.sInf1o9r a48coTmurpinugtebre, tchaemTeuirnintegrMesatcehdine.
in mathematical biology.

June 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30

June 2021 | July 2021

28 week 27 July 2021 5 week 28
Monday Monday

29 Tuesday 6 Tuesday
30 Wednesday 7 Wednesday
1 Thursday 8 Thursday
2 Friday 9 Friday
3 Saturday 10 Saturday
4 Sunday 11 Sunday
Eduard Čech
BDoirendininSPtrraagčuoev ((CCZZ)) 1259//0036//11986903

cHCozismecrpehasmcetaaiftrihccheamtiinoatntei(crieniastntoswphoinolocwgluyod)rekadenddptarhotejCenhcoatitrvlieoesndUoiffnfiČeveerecrsnhittciyaolihngoPemroaomglouegetyray. HnadenawdtaMtsoatpshoaelorfygikrys.utnHtioveepirsusbiteliyssiphneaBcprianrololyo. fkonfoTwynchfoonrotfhfe's ttheecohrneiqmueink1n9o3w7n. as Stone–Čech
fMoorrmeoavthertehaiscwheorrsk.in science, he devoted to school mathematics too - he had written some textbooks for high schools and had been arranging lectures

July 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

July 2021

12 week 29 19 week 30
Monday Monday

13 Tuesday 20 Tuesday
14 Wednesday 21 Wednesday
15 Thursday 22 Thursday
16 Friday 23 Friday
17 Saturday 24 Saturday
18 Sunday 25 Sunday
Traian Lalescu
Born in Bucharest (RO) 12/07/1882
Died in Bucharest (RO) 15/06/1929

RoTinomemisoaofnatiarhane. faPocruoanmddeienmersincotafpntehdresmotnhaaetlhoiteryymooafftitinchtieaengR,roaumlneaivqneuiarasntiitomynaspt.rhoefmesastiocralinscBhuocohl.aIrtehsatsacnodntTriimbuiștoioanras.inHemuwltaipslethfeielfdirssotfrpeucrteoranodf athpepliPeodlymtaetchhenmicatSicchs.oHoleoisf
Hmeatlheefmt antuimcse.rous studies in the fields of functional equations, trigonometric series, mathematical physics, geometry, algebra, the history of

July 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

July 2021 | August 2021

26 week 31 2 week 32
Monday Monday

27 Tuesday 3 Tuesday
28 Wednesday 4 Wednesday
29 Thursday August 2021 5 Thursday
30 Friday 6 Friday
31 Saturday 7 Saturday
1 Sunday 8 Sunday
Marian Rajewski | Henryk Zygalski | Jerzy Różycki

HMThearnreiraeynkPRoZelyisjgehawlmsskkaiit((h11e99m00a85t--i1c19i9a78n8s0))awwnadassctrayhlspeotiontlvhoeegnicstrtoesra.otTfohrZeoyyfghatahlsdekwsi’soor-skchianelgleetodsn“Rmbereejetahwkoisndkg.iT’tshhbiesocmmoebdt”ehaoonfddteahnepaiEbonlneiegdemPraoo.lfismhocdryeprntomloegtihsotsdstoofdcercyipphtoegrrtahpehcyo. de encrypted
JbeyrtzhyeREónżiygcmkai (.1H9e0w9o-1rk9e4d2f)osreProvleisdhamsialitcairvyiliianntecllriygpetnocloegsiestrvwiciteh. the Polish General Staff's Cipher Bureau.

August 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

August 2021

9 week 33 16 week 34
Monday Monday

10 Tuesday 17 Tuesday
11 Wednesday 18 Wednesday
12 Thursday August 2021 19 Thursday
13 Friday 20 Friday
14 Saturday 21 Saturday
15 Sunday 22 Sunday
Archimedes of Syracuse
Born in Syracuse (IT) in 287 BC
Died in Syracuse (IT) in 212 BC

hdCeiosncwsoaivdseerareebddleaontnode coeafxlptchluoeliatgeterdetathhteeessptursirncfcaieicpnelteiassntosdfatonhpdeemrvaoatltiuohmnemeofaotlfeictvihaeenrsosapfnhhdeisrhteoisraynn,dahmigseuceiossnsatrstibshouetcliiaoawntessdgtothoafrtmormaenggyuelmaotmaecehtthirnyeetsfoloahanytddinrdgoesovtfiactteihcse,, fsbruoocmdhieoasps;tiitcnhseetnoAgrmicnheeicemhrieandngeichasen:
sThcereewx,ctloamdeamtioonns“etruarteekha”is(Iinhvaevnetfivoeunadbiiltit)y, a. scribed to him after the discovery of the principle that has his name, became famous over the centuries.

August 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

August 2021 | September 2021

23 week 35 30 week 36
Monday Monday

24 Tuesday 31 Tuesday
25 Wednesday 1 Wednesday September 2021
26 Thursday 2 Thursday
27 Friday 3 Friday
28 Saturday 4 Saturday
29 Sunday 5 Sunday
Stefan Banach
Born in Kraków (PL) 30/03/1892
Died in Lviv (UA) 31/08/1845

eSMataertlfyhaenamgBeaa,tnihcaeaclhpSwoosacssieeatsyPs.eoHdleisehwxmatsraaatohlrsedominoaantreyicoimafnatthwheheofmoiaustncidcoeanrlssaidonefdrtelhidnegoLunviesivtoiScfctthhaoeleownl too.rflIdMn'sa1tm9h1oe9smt,aiwmtiictphsorastneadvnetthraaenldfooitnuhfneldureemrntoaifathlme2om0dtaehtr-incceifaunnntsuc,rtyBioamnnaaaltchahneamfloyarstmiisce.iadHnetsh.reeFrcPoeomivliesadhn
DmuarninygatwhaerdNsa,zwi oroctceuparaotuionnd,6B0anbaocohkswaansdfocrrceeadtetdomeaarnnyatlhiveionrgeamssawfheiecdhearroefnliocwe athteRufoduonlfdWateioignls'soInfsmtaittuhteemfoartiSctsu.dy of Typhus and Virology.

September 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30

September 2021

6 week 37 13 week 38
Monday Monday

7 Tuesday 14 Tuesday
8 Wednesday 15 Wednesday
9 Thursday 16 Thursday
10 Friday 17 Friday
11 Saturday 18 Saturday
12 Sunday 19 Sunday
Pythagoras
DieBdoinrnMineStaapmoonstu(mGR()ITin)6artohucnedn4tu9r0y BBCC

PionfyctlthuhadeginomgraotshrnewinPagystahanadgfaoemrveoeaunnsintghMeasottrhaeremsm,aaPstyictthihaaengopfrrlaoenmaentGtuVreneeinncuges,..tIhSneoamfniveteiqaruecitcgyou,ulaPnrytstsohmalidgeson,rtatihsoenwTtahhseaotcrrytehdoeiftepPdhroilwpoositrohtpiohmnyasna, ysthsmeocasitpahhteeemdricawittiiycthaolfPatynhtdehasEgcaoirertanhst,iafwnicdasdtihsreecloiadvteeenrditeittsoy,
mThaethPeymthaatgicosreaanndtthheaotrneumm: Tbheersswumereofimthpeoratraenats, bouftthiteistwdoebsaqtueadretoswonhathteexletgesnt(,aifaantdabll),ehqeuaaclstutahlelyacroenatorifbtuhteedsqtouamreatohnetmhaethicyspootrennautsuera(lcp)h. ilosophy.

September 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30

September 2021 | October 2021

20 week 39 27 week 40
Monday Monday
28 Tuesday
21 Tuesday 29 Wednesday
22 Wednesday 30 Thursday
23 Thursday 1 Friday October 2021
24 Friday
25 Saturday 2 Saturday
26 Sunday 3 Sunday
Bernard Bolzano
Born in Prague (CZ) 05/10/1781
Died in Prague (CZ) 18/12/1848

Bivnieefirwnnisater.dsFiBomroaltzl.haHeneomawlosasostgaapvaBeroteh, exhamismiapwnleomsrkaotfch1aem-m1eactoticorriaepnsr,polomongidniceeinancnce,espphboieloststwhoeupemhneortu,hstelhyee.loeBlmoegreninaatnrsdaonBfdoalnCzaaintnfhoionilsticuecpscreieetssastnfdoulftlyhIteafreliealeenmdeecxntatrlsaccuotlfuiosanp,frraoolpsmoertkshnueobwscneotnf.coerphtisolfibethrael
pBroolzpaonsoedhetlhdeaodriveasnccoeudnvtieerwtsoothnolosegiscu, mggaetshteemdabtyictahlevaGreiarbmleasn,plihmiliotss,oapnhdercIomnmtinauniutye.lIKnahnits. studies of the physical aspects of force, space, and time he

October 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

October 2021

4 week 41 11 week 42
Monday Monday

5 Tuesday 12 Tuesday
6 Wednesday 13 Wednesday
7 Thursday 14 Thursday
8 Friday 15 Friday
9 Saturday 16 Saturday
10 Sunday 17 Sunday
Cahit Arf
Born in Thessaloniki (GR) in 11/10/1910
Died in Istambul (TR) in 26/12/1997

eAmnrafct'sohueirnmafgalueteimcnieacnnets.oHonef fTsauccriekilinetcyae,teaditnstghoeemneneortwaiml-ceaenoldefbmtrhaateteirhdecvmairsaeitteicrossf, RhinaodbpeafrrrtutiiLctafuunlalgrdlaiwsncdaussstspoirooTnfusorukonendy.t(hAneolitrwhfoifeuaglmdhoouhfseinfthoearrdetshvteewrLyaitnhfgehlwaimndfosarnmpdraohlgarsdatmured,ceaenmitvsoe,ndgmsmaunpaypnoyorfottathhneedr
trehvinegrss)e; odfutrihnegTwuhrkicishhL1a0nglirlaanbdasnkwnoortkeedissouuetdsionm2e00a9rd.uous calculations on the epsilon factors of Artin L-functions.Arf's portrait is depicted on the

October 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

October 2021

18 week 43 25 week 44
Monday Monday

19 Tuesday 26 Tuesday
20 Wednesday 27 Wednesday
21 Thursday 28 Thursday
22 Friday 29 Friday
23 Saturday 30 Saturday
24 Sunday 31 Sunday
Eukleides
Born in 323 BC
Died in Alexandria (EG) in 285 BC

1Gth9reetehhkiosmrtoearatyhrloeyfm2ma0attithchicaeenmn,atotufitrcyes.n,InsreetrfhveeirnrEgeldeamstoethnaetssmt,hEaeuinc"ftlioeduxdntebddoeuorckoeffdogrtethoeematcehhterinoyg"reommratsthhoeef"mwfaahttahictesirs(oenfsogpweeoccmaialellelytdrgyEe".uoHcmliisdeeEtralyen)mfgereonomtmsteihsteroytnifmeroeomfotfahitsesmmpauollbssltiecintaftoliuofenanxutinoiatmlilwst.hoEerkulscaltiiend
also wrote works on perspective, conic sections, spherical geometry, number theory, and mathematical rigour.

October 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
2021 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

November 2021

1 week 45 8 week 46
Monday Monday

2 Tuesday 9 Tuesday
3 Wednesday 10 Wednesday
4 Thursday 11 Thursday
5 Friday 12 Friday
6 Saturday 13 Saturday
7 Sunday 14 Sunday
Gottfried Wilhelm von Leibniz
Born in Leipzig (DE) 01/07/1646
Died in Hanover (DE) 14/11/1416

GtfuhonotcuttfgirhoietndowfLateshibeinmdizpelrwiicvaiatstiinavetGraiegsromanaloinmmimet.taHrticihseapmnhdailotlioscgoiaapnrhitywhihmsoiacldsteoavbiemlleopspo,erwtdahntichtheanepdxreihsseteeindntviendnahtyiesnddoaatnayt,eiLaoernliybfncoiarzlctwhuealastditinfhgfeemrfeiarncsthtiaitnloea.neAdmltpihnlooteuyggirhtaetlhxcepallmiccuaitltluyhs,etmtohaodtueicgnaholtnheoetainnoeynvooeffr
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Pierre de Fermat Born in Beaumont-de-Lomagne (FR) 06/12/1607
Died in Castres (FR) 12/01/1665

Pierre de Fermat was a French lawyer at the Parlement of Toulouse, France, and a mathematician who is given credit for early developments that
led to infinitesimal calculus, including his technique of adequality. In particular, he is recognized for his discovery of an original method of finding
the greatest and the smallest ordinates of curved lines, which is analogous to that of differential calculus, then unknown, and his research into
number theory. He made notable contributions to analytic geometry, probability, and optics. He is best known for his Fermat's principle for light
propagation and his Fermat's Last Theorem in number theory, which he described in a note at the margin of a copy of Diophantus' Arithmetica.

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Niccolo Tartaglia
Born in Brescia (IT) in 1499 AD
Died in Venezia (IT) in 1557 AD

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Ali Qushji
Born in Samarkand (UZ) in 1404
Died in Constantinople (TR) in 16/12/1474

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(1394-1449).

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Isaac Newton
Born in Woolsthrope Manor (UK) 04/01/1643
Died in Kensington (UK) 31/03/1727

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seminal contributions to optics, and shares credit with Gottfried Wilhelm Leibniz for developing the infinitesimal calculus.

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MO TU WE January February March MO WE T22001H21958 2F3001R30269 April
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SoZIusetrsitcpuoetolsSCzokmolpNreonwsaivSoaSrztyantaa,lePoNl.a1ndLanciano, Italy

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