Hottest Questions This Month

5 votes

1 answer

106 views

Why are the symbols E, F, G, L, M, and N used for the coefficients of the fundamental forms?

Gerald Edgar

8,367

modified Jun 23 at 19:51

10 votes

1 answer

136 views

First use of "Spur" (trace) for linear maps / matrices

terminology notation linear-algebra

Torsten Schoeneberg

642

modified Jun 29 at 17:51

3 votes

1 answer

145 views

Why is the letter $b$ used to represent the y-intercept in the equation of straight line?

mathematics terminology geometry

Big Brother

1,875

modified Jun 24 at 6:56

1 vote

1 answer

108 views

Number theory: a quote

reference-request number-theory quote book-recommendation

Chris Leary

191

modified Jun 9 at 21:24

2 votes

1 answer

129 views

What mathematical expressions took a long time for a closed form to be found?

mathematics

Alexandre Eremenko

42.7k

answered Jun 23 at 6:06

1 vote

2 answers

125 views

Discussions of why the Greeks "squared the..." geometrically

mathematics geometry ancient-greece

Andrew R.

128

modified Jun 15 at 5:35

1 vote

1 answer

121 views

Why is thermodynamics called thermodynamics?

physics terminology thermodynamics

Big Brother

1,875

modified Jun 14 at 12:50

5 votes

1 answer

91 views

When was the geometric structure of a water molecule discovered?

physics experimental-physics chemistry

Mauricio

1,453

modified Jun 23 at 8:32

2 votes

1 answer

132 views

Request: Readers to Check Accuracy of the History in my Young Adult Math Story

mathematicians

Alexei Kopylov

690

modified Jun 15 at 1:09

2 votes

2 answers

84 views

Special quadratic reciprocity? $(-3/p)_2$ and $(5/p)_2$ in addition to $(-1/p)_2$ and $(2/p)_2$?

number-theory

KCd

4,064

modified Jun 18 at 15:00

0 votes

1 answer

152 views

Online resources for 19th century physics textbooks

newton

terry-s

2,919

modified Jun 24 at 12:41

0 votes

2 answers

135 views

Newton's Corollary #1 to the Laws of Motion (Principia)

classical-mechanics euclidean-geometry newton galileo

terry-s

2,919

modified Jun 9 at 14:35

2 votes

1 answer

100 views

Which are the most ancient theorems that negate the existence of some deeply valued entity?

mathematics

Conifold

66k

modified yesterday

0 votes

1 answer

211 views

how did they know that the space could expand?

relativity-theory einstein cosmology

Alexei Kopylov

690

answered Jun 24 at 18:09

1 vote

0 answers

135 views

Who came up with the idea of variables in mathematics?

mathematics

A Mani

101

modified Jun 11 at 10:13

1 vote

0 answers

106 views

Is there a known photograph of Walter Arnoldi?

mathematicians 20th-century

Andrew R.

128

modified Jun 13 at 19:01

0 votes

1 answer

82 views

Weights & Measures - barleycorn GRAIN

units

Fred

165

answered Jun 17 at 2:09

1 vote

1 answer

47 views

Who came up with the theory of Krylov Subspaces?

mathematicians

user6530

1,955

answered Jun 11 at 17:38

0 votes

0 answers

88 views

Poincaré's quote: "I thought a lot about them"

mathematicians quote

Mauricio

1,453

modified Jun 21 at 12:24

2 votes

1 answer

84 views

Is there a "Moore's Law" of length-determining apparatuses?

experimental-physics metrology

Geremia

5,041

answered yesterday

2 votes

0 answers

82 views

When did ordered pairs first appear?

mathematics logic

Greg Nisbet

351

asked Jun 20 at 0:37

3 votes

0 answers

80 views

What were the main different homology theories in 1930 and how did they get united?

mathematics topology

J. W. Tanner

271

modified Jun 19 at 12:37

0 votes

0 answers

78 views

How did ancient Greeks explain that we don't fall off the Earth's sphere? [closed]

physics ancient-greece gravity ptolemy aristotle

lyderic

101

asked Jun 7 at 5:35

0 votes

0 answers

76 views

Do I need to understand Euclid's Elements before reading the Almagest? [closed]

mathematics ancient trigonometry

Andrew R.

128

modified Jun 29 at 11:41

1 vote

1 answer

57 views

Help in Understanding Emission theory of Empedocles

physics optics

Andrew R.

128

answered Jun 13 at 14:30

2 votes

0 answers

70 views

How to give a meaningful interpretation to Gauss's notion of "oriented area" of self-intersecting geodesic polygons?

geometry gauss differential-geometry

user2554

3,827

modified Jun 22 at 21:59

2 votes

0 answers

69 views

Who is Robert H. Cowen, the eponym of Cowen's Lemma?

biographical-details

Prime Mover

797

asked Jun 19 at 8:15

0 votes

0 answers

67 views

What does P. G. Tait mean by "double points"?

mathematics graph-theory definition

The Amplitwist

135

modified Jun 17 at 19:29

1 vote

0 answers

63 views

How did they explain the radiation from hot objects at different wavelengths before the concept of atom was widely accepted?

physics chemistry atomic-theory radiation

PG1995

327

modified 2 days ago

0 votes

1 answer

46 views

Deflection of the pendulum arm in Cavendish experiment

experimental-physics newton

zeynel

47

modified Jun 10 at 7:46

0 votes

0 answers

59 views

What effect were used for manufacturing HDD before 1988?

computer-science

Albert Will

1

modified Jun 15 at 11:27

0 votes

0 answers

58 views

Quote about the history of particle physics

physics quote particle-physics

Big Brother

1,875

modified Jun 30 at 0:57

0 votes

0 answers

35 views

Existential Import of categorical propositions

philosophy-of-science logic

Stan

11

asked Jun 7 at 0:18

-1 votes

0 answers

14 views

How were plant stress hormones discovered?

biology

Big Brother

1,875

modified Jun 22 at 7:11

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