Wikipedia:Reference desk/Archives/Mathematics/January 2020

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January 1

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 1

1. When are class numbers of imaginary quadratic fields with discriminant 1-4*n odd?

January 2

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 2

1. Sum of differences
2. Entia multiplicata praeter necessitatem
3. Including/excluding the first day

January 9

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 9

1. The last digits of pi
2. Zeroth
3. What is a pickled beet?

January 10

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 10

1. Odd perfect numbers

January 11

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 11

1. Number of regions in regular polygon with diagonals drawn

January 13

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 13

1. Compass and straightedge equivalent in three dimension?

January 14

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 14

1. prove that for any event in algebra exists an event in the generated sigma

January 16

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 16

1. Untitled

January 19

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 19

1. Closest integer solution
2. continuum hypothesis and machine learning

January 22

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 22

1. Does a second pulley make something heavy easier to lift?
2. Is eccentricity in disconnected graphs infinite?

January 24

Wikipedia:Reference_desk/Archives/Mathematics/2020 January 24

1. 8 x 10^67 =
2. Question regarding sequences
3. Product of primes