Tuesday - Happy Pi Day

LionJim

Well-known member
Oct 12, 2021
11,518
15,777
113
Pi = 4-4/3+4/5-4/7+4/9-4/11…

Pi was proved by Lambert in 1761 to be irrational. (Think about it: it took thousands of years for someone to find a proof.) Lindemann proved in 1882 that pi is transcendental, a bigger deal. Oversimplified explanation: sqrt(2) is irrational but it can be constructed, as sqrt(2) is the hypotenuse of an isosceles right triangle with legs of length 1. (Some irrational numbers can be constructed.) Pi cannot be constructed with a compass and an unmarked straightedge. (Transcendental numbers cannot be constructed.)
 

Nitt1300

Well-known member
Oct 12, 2021
5,377
10,286
113
 

BobPSU92

Well-known member
Oct 12, 2021
18,348
27,641
113
Pi = 4-4/3+4/5-4/7+4/9-4/11…

Pi was proved by Lambert in 1761 to be irrational. (Think about it: it took thousands of years for someone to find a proof.) Lindemann proved in 1882 that pi is transcendental, a bigger deal. Oversimplified explanation: sqrt(2) is irrational but it can be constructed, as sqrt(2) is the hypotenuse of an isosceles right triangle with legs of length 1. (Some irrational numbers can be constructed.) Pi cannot be constructed with a compass and an unmarked straightedge. (Transcendental numbers cannot be constructed.)

Thousands of years? They had circles back then?
 

Mufasa94

Active member
Oct 12, 2021
357
493
63
Did anyone know today is actually national potato chip day? Heard it mentioned on news last night and then did a search today and many websites state it is.
 
  • Like
Reactions: LionJim