Wikipedia:Reference desk/Archives/Mathematics/January 2019

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January 4

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 4

1. Factoring trigonometric polynomials

January 7

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 7

1. What's the most ambiguous decimal year? (UTC)

January 8

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 8

1. Angular accleration definition

January 9

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 9

1. 24-cell question

January 15

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 15

1. Algebraic integers and (ordinary or Gaussian) rationals

January 17

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 17

1. Injective cubic polynomial functions

January 18

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 18

1. Most recent Mathematics taught in Secondary School (ages 11-17)?

January 22

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 22

1. Chance of seeing any adjacent pairs in Powerball Lottery

January 26

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 26

1. Powerball Paradox of Probability

January 28

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 28

1. Linear equations
2. Mathematical analysis
3. ideal related

January 29

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 29

1. Truth vs provability
2. Who was the first to discover the well known formula $cis(a+b)=cis(a)cis(b)$ ?

January 31

Wikipedia:Reference_desk/Archives/Mathematics/2019 January 31

1. HMM: Efficiently calculating a probability of a subsequence given the next hidden state