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Luck does not exist

2023, the number

Some characteristics of the number 2023

 No comments   29 d   maths


The number 25 has a magical appearance. 2 plus 5 equals 7, my lucky number. And, of course, 25 is 5²

 No comments   1 mo   maths

Alternative math

Being politically correct all the time is similar to being brain-dead

 No comments   2020   America   madness   maths   video

Why zero factorial is one

What a great lecture

 No comments   2020   maths   video

A better abbreviation for sine & cosine

For some weird reason the abbreviation for sine is sin and cos for cosine. This is madness compared to the beautiful and logical abbreviation for tangent and cotangent

 1 comment   2018   abbreviations   maths   standards