Wikipedia:Reference desk/Archives/Mathematics/February 2019

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February 1

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 1

1. Limits

February 2

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 2

1. Iterated totients and primitive roots

February 4

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 4

1. sum of cubes
2. Are there any models of the Euclidean plane that use non-Euclidean geometry?

February 5

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 5

1. Coloured bricks - historical

February 11

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 11

1. Turning an iterative equation into a differential equation

February 12

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 12

1. The Turing test
2. Dedekind psi function
3. Partitions of the 24-cell vertices into Hexagons?

February 13

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 13

1. Number of dictionary-compatible phrases of length n

February 14

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 14

1. Fantastic Beasts and Where to Find Them

February 15

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 15

1. Solve for x

February 16

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 16

1. Mathematical induction article, the section "Example: forming dollar amounts by coins"
2. Polynomials sending primes to primes

February 18

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 18

1. Standard deviation question
2. 1 with a googolplex zeroes

February 20

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 20

1. Inverse of function

February 21

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 21

1. Transformation Constant

February 22

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 22

1. Dihedral angle of antiprisms

February 23

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 23

1. Chords instead of sines
2. General formula for $int_{-infty}^{infty}frac{f(x)dx}{1+x^{2}}$ in terms of series expansion coefficients of $f(x)$

February 26

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 26

1. Limit of quotient

February 27

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 27

1. Fully faithful endofunctors of Set
2. Series

February 28

Wikipedia:Reference_desk/Archives/Mathematics/2019 February 28

1. Rates of return