Historical clue formulations

• Mathematician known for the constant "e" (2.71828) — 2024-03-14
• Swiss mathematician who introduced functional notation — 2023-12-20
• Pioneer in calculus notation — 2023-07-19
• Swiss author of "Elements of Algebra" — 2022-03-16
• "Elements of Algebra" author, 1770 — 2020-09-06
• Introducer of the math symbol "e" — 2020-07-25
• Introducer of the symbol "e" for natural logs — 2020-06-14
• Pioneer in graph theory — 2020-04-04
• Mathematician once pictured on Swiss money — 2019-08-19
• Mathematician taught by Bernoulli — 2019-08-11
• Noted blind mathematician — 2018-01-13
• "Introduction to the Analysis of the Infinite" writer — 2017-11-05
• 18th-century pioneer in graph theory — 2017-10-13
• Mathematician whose name sounds like a fuel ship — 2017-07-31
• 18th-century mathematician who introduced the function — 2017-03-28
• Mathematician whose name sounds like a ship — 2016-06-28
• Swiss 5-Across pioneer — 2011-06-15
• Originator of the formula e^ix = cos x + i sin x — 2011-04-20
• Swiss who pioneered in graph theory — 2011-03-02
• He introduced the symbol "e" for natural logs — 2010-03-12
• Introducer of the math symbol "e" — 2009-04-25
• "Institutiones Calculi Integralis" writer — 2008-08-14
• Originator of the equation e to the power (pi * i) + 1 = 0 — 2008-07-24
• Calculus pioneer — 2007-11-07
• Mathematician who introduced the function symbol f(x) — 2007-08-05
• Discoverer of the law of quadratic reciprocity — 2007-08-04
• Mathematician seen on a Swiss 10-franc note — 2007-06-22
• Pioneer in the math of sudoku — 2006-12-29
• Formulator of the quadratic reciprocity law — 2005-02-12
• Formulator of the law of quadratic reciprocity — 2003-11-14
• Author of "Introduction to Algebra" — 2003-08-16
• Noted blind mathematician — 2002-06-12
• "Theoria motuum lunae" writer — 2002-05-17
• Calculus developer — 2002-01-11
• Noted blind mathematician — 2001-09-29
• Swiss mathematician — 2001-09-18
• Noted student of Bernoulli — 2001-03-10
• Mathematician with a formula named after him — 2000-08-20
• Prolific writer on calculus — 1999-10-12
• Noted Swiss mathematician — 1999-09-01
• Solver of the Königsberg bridge problem — 1999-04-17
• Calculus pioneer — 1999-03-21
• Pioneer in calculus — 1999-01-17
• Swiss mathematician — 1994-11-22
• Swiss mathematician — 1994-10-04
• Pioneer in calculus notation — 1994-07-17
• Swiss mathematician — 1993-12-15