User KCd - History of Science and Mathematics Stack Exchange

KCd

Member for 8 years, 3 months
Last seen this week

14 Questions

Score Activity Newest Views

14 votes

0 answers

485 views

A basic mistake by Cayley

asked Nov 12, 2017 at 20:24

14 votes

1 answer

1k views

Notation for Christoffel symbols

asked Nov 18, 2018 at 3:09

10 votes

1 answer

1k views

Why is differentiation under the integral sign named the Leibniz rule?

asked Jan 4, 2019 at 1:49

10 votes

1 answer

538 views

Notation from Weyl's algebraic number theory book

asked Jan 19, 2020 at 19:47

10 votes

1 answer

257 views

Jacobi's product for the discriminant

asked Jul 25, 2016 at 11:09

9 votes

1 answer

209 views

Riemann's moduli and Dedekind's modules: any connection?

asked May 12, 2018 at 22:57

9 votes

0 answers

236 views

First use of term "Hilbert's Nullstellensatz"

asked Apr 24, 2021 at 0:38

8 votes

2 answers

434 views

What is the original source for Gelfand's problem on leading digits of the powers of 2?

asked Feb 26, 2016 at 14:21

7 votes

1 answer

313 views

Calculation of Gauss leading to 18:7 resonance between orbits of Jupiter and Pallas

asked May 13, 2015 at 20:20

6 votes

1 answer

342 views

First appearance of tensor product symbol $\otimes$

asked Feb 1, 2018 at 4:48

4 votes

1 answer

405 views

First appearance of Hadamard's lemma on smooth functions

asked Jun 25, 2017 at 22:07

2 votes

1 answer

184 views

First evaluation of $\sum_{n \geq 1} 1/n^2$ by Fourier series

asked Jun 24, 2016 at 19:07

2 votes

1 answer

228 views

Origin of the notation $s = \sigma + j\omega$ in electrical engineering/control theory

asked Feb 23, 2021 at 0:57

1 vote

0 answers

88 views

First use of $K$ in notation for continued fractions

asked Nov 5, 2020 at 3:54