B

C

👇This is problem number 26👇

@worldmath

A

B,C

👇This is problem number 27👇

@worldmath

30 April 1777 Braunschweig
23 February 1855 Göttingen

Johann Carl Friedrich Gauss was a German mathematician who contributed significantly to many fields including:
✅number theory
✅algebra
✅statistics
✅analysis
✅differential geometry
✅geodesy
✅geophysics
✅mechanics
✅electrostatics
✅astronomy
✅matrix theory
✅optics.

Sometimes referred to as the "foremost of mathematicians" and "greatest mathematician since antiquity".
Gauss had an exceptional influence in many fields of mathematics and science and is ranked as one of history's most influential mathematicians.

A
Sent by Pooria Iranian from Iran

B
Sent by Pooria Iranian from Iran

C
Sent by Pooria Iranian from Iran

A
An other prove
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Sent from Obidah ali Alsharafy from Yemen

👇This is problem number 28👇

@worldmath

Maryam Mirzakhani
Born:
12 May 1977, Iran🇮🇷
Died:
Today,15 July 2017, USA🇺🇸

🔵🔵Her research topics include:

✅Teichmüller theory
✅hyperbolic geometry
✅ergodic theory
✅symplectic geometry

🔴🔴Awards and honors

🏅1995-99:
IPM Fellowship, Tehran, Iran

🏅2003:
Merit fellowship Harvard University

🏅2003:
Harvard Junior Fellowship Harvard University

🏅2004:
Clay Mathematics Institute Research Fellow
"Simple geodesics on hyperbolic surfaces and the volume of the moduli space of curves"

🏅2009:
AMS Blumenthal Award

🏅2010:
Invited to talk at the International Congress of Mathematicians, on the topic of "Topology and Dynamical Systems & ODE"

🏅2013:
The 2013 AMS Ruth Lyttle Satter Prize in Mathematics.

🏅2014:
Named one of Nature's ten "people who mattered"

🏅2014:
Clay Research Award

🏅2014:
Plenary speaker at the International Congress of Mathematicians (ICM)

🏅🎖2014:
Fields Medal
On 13 August 2014, Mirzakhani became both the first woman and the first Iranian honored with the Fields Medal, the most prestigious award in mathematics.
her work in "the dynamics and geometry of Riemann surfaces and their moduli spaces".

🏅2015:
Elected foreign associate to the French Academy of Science

🏅2015:
Elected to the American Philosophical Society

🏅2016:
National Academy of Sciences

🏅2017:
Elected to the American Academy of Arts and Sciences