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seen Dec 9 at 1:12

Apr
1
asked Multiple measurements per person per treatment
Feb
25
awarded  Notable Question
Nov
16
asked The forever moving billiard ball
Oct
2
comment Surprising identities / equations
How is this formula not immediately obvious?
Oct
2
awarded  Good Answer
Sep
30
awarded  Nice Answer
Sep
29
revised closed form $f_n=\sqrt{2f_{n-1}}$ ?
added 2 characters in body
Sep
29
comment closed form $f_n=\sqrt{2f_{n-1}}$ ?
So f_1 = 2^(1 + 3/4) ?, but I thought f_1 was 2^(1/2)
Sep
29
answered closed form $f_n=\sqrt{2f_{n-1}}$ ?
Sep
29
comment Surprising identities / equations
This topic seems very intriguing, so thanks for posting +1.
Sep
28
comment Surprising identities / equations
@DanielV, it does lead to a paradox. The sum from 1 to infinity of 2^k = 2 + 2 + 2 + 2 etc. = -1 (our assumption). Now 2 = 1+1. Therefore 1 + 1 + 1 + 1 + 1 = -1. But the sum from 1 to infinity of 1^k = -1/2.
Sep
28
answered Surprising identities / equations
Sep
28
comment Surprising identities / equations
How can the sum from 1 to infinity of positive integers lead to a negative number?
Sep
11
comment Blue eyes: a logic puzzle
@IttayWeiss, what is an example of a harder logic problem?
Sep
8
awarded  Yearling
Jun
10
awarded  Popular Question
May
14
awarded  Caucus
Feb
6
comment Find a function that that makes the value of this improper integral equal to 1.
Thanks for your answer.
Feb
6
comment Find a function that that makes the value of this improper integral equal to 1.
I wasn't sure about the title. Please feel free to correct.
Feb
6
accepted Find a function that that makes the value of this improper integral equal to 1.