1911-2004
Shizuo Kakutani
Japan and the United States
Shizuo Kakutani was mathematician. He worked in functional analysis, probability, and fixed-point theory.
Documented historical recordMath Adventures
Real people. Real work. Visible evidence.
Math Heroes
Meet builders, navigators, teachers, programmers, scientists, biblical workers, and mathematicians without forcing your browser to render the entire collection at once.
244 heroes26 Bible heroes18 per page
Evidence matters
Every story shows its certainty.
Documented history, traditional attribution, direct biblical descriptions, and reasonable mathematical inference are labeled instead of blurred together.
Hero quest board
Search and choose a trail
Showing 1–11 of 11 matching heroes.
c. 1267-c. 1320
Kamal al-Din al-Farisi
Persia
Kamal al-Din al-Farisi was mathematician and optical scientist. He explained the primary and secondary rainbow through refraction and internal reflection in transparent spheres.
Documented historical record1905-1986
D. R. Kaprekar
India
D. R. Kaprekar was schoolteacher and recreational mathematician. He discovered number patterns including Kaprekar numbers and the constant 6174.
Documented historical record1664-1739
Takebe Katahiro
Japan
Takebe Katahiro was mathematician and mapmaker. He developed high-precision calculations of pi and worked with power-series-like expansions.
Documented historical record1571-1630
Johannes Kepler
German lands
Johannes Kepler was mathematician and astronomer. He formulated mathematical laws of planetary motion from Tycho Brahe’s observations.
Documented historical record1048-1131
Omar Khayyam
Persia
Omar Khayyam was mathematician, astronomer, and poet. He classified cubic equations and solved many geometrically through intersections of conic sections.
Documented historical recordc. 780-c. 850Featured
Al-Khwarizmi
Khwarazm and Baghdad
A scholar whose systematic writing on calculation and equation solving helped shape algebra and whose name became the root of the word algorithm.
Documented historical record1849-1925
Felix Klein
Germany
Felix Klein was mathematician and educational reformer. His Erlangen Program organized geometries by their transformation groups.
Documented historical record1903-1987
Andrey Kolmogorov
Russia
Andrey Kolmogorov was mathematician. He axiomatized probability and contributed to turbulence, algorithms, dynamical systems, and information ideas.
Documented historical record1850-1891
Sofia Kovalevskaya
Russia and Sweden
Sofia Kovalevskaya was mathematician and writer. She contributed to partial differential equations, mechanics, and analysis and became a university professor.
Documented historical record1031-1095
Shen Kuo
China
Shen Kuo was scientist, engineer, statesman, and mathematical writer. He wrote on surveying, astronomy, calendars, combinatorial counting, and geometric problems.
Documented historical recordTurn history into an adventure
Choose an era or profession trail.
Follow the people, then jump into the terms and practice connected to their work.