Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫  π  -¹ ² ³ °

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## #1 2006-03-23 11:46:36

Ricky
Moderator
Registered: 2005-12-04
Posts: 3,791

### Shortest math joke

Let ∈ < 0.

[Don't worry about it if you don't get it]

"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

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## #2 2006-03-23 12:26:32

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

### Re: Shortest math joke

We should probably be worrying more if we do get it.

Why did the vector cross the road?
It wanted to be normal.

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## #3 2006-04-10 03:56:30

KelvinKing
Member
Registered: 2006-04-05
Posts: 2

### Re: Shortest math joke

not understand......can u explain?

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## #4 2006-04-10 04:15:45

Ricky
Moderator
Registered: 2005-12-04
Posts: 3,791

### Re: Shortest math joke

In dealing with limits, sets, and sequences, just about every single proof starts off with the line:

Let ∈ > 0.

It reached a point where ∈ is pretty much just assumed to be a positive real number.

Last edited by Ricky (2006-04-10 04:16:32)

"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

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