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nuuskur's latest activity
nuuskur
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I
The set of nonzero values of pmf is at most countable
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Here's how I'd formulate it. Let ##C## be a set of positive numbers. Define ##C_n = \{x\in C \mid x> 1/n\}##. Then ##C_n## is a monotone...
Friday, 7:49 AM
nuuskur
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DaveC426913's post
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Programming Jokes: Lame, Science & Math Jokes!
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Friday, 7:42 AM
nuuskur
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Programming Jokes: Lame, Science & Math Jokes!
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Friday, 7:41 AM
nuuskur
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Wrichik Basu's post
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Programming Jokes: Lame, Science & Math Jokes!
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Friday, 7:41 AM
nuuskur
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jack action's post
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Programming Jokes: Lame, Science & Math Jokes!
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Friday, 7:40 AM
nuuskur
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jack action's post
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Programming Jokes: Lame, Science & Math Jokes!
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Friday, 7:39 AM
nuuskur
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DennisN's post
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Collection of Lame Jokes
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Friday, 7:38 AM
nuuskur
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Collection of Lame Jokes
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How many dead bodies does it take to change a light bulb?
Friday, 7:36 AM
nuuskur
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jack action's post
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Collection of Lame Jokes
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Friday, 7:36 AM
nuuskur
replied to the thread
B
What unique contributions to math did linear algebra make?
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Gaussian elimination is a product of linear algebra. The elimination method is justified because it does not change the linear...
Friday, 6:27 AM
nuuskur
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chwala's post
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Prove the given hyperbolic trigonometry equation
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Yeah using ##\sinh^2 \dfrac{x}{2}## is easier...and the appropriate approach...has only 2 lines...will post that later... Using...
Thursday, 7:57 AM
nuuskur
replied to the thread
Fundamental matrix for complex linear DE system
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Why is it a problem that eigenvalues are not real? A fundamental matrix of the system is a matrix-valued function ##\Phi## such that the...
Thursday, 1:56 AM
nuuskur
replied to the thread
Prove the given hyperbolic trigonometry equation
.
Typos in your exponents. Right now you have zero at the very end. Explain the 5th equality from the bottom.
Wednesday, 7:12 AM
nuuskur
replied to the thread
A
Axiom of choice: Replacing a strong condition with a weaker condition
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Shooting from hip, I'd say choice is not necessary for this to occur. To prove choice, we would have an arbitrary family of nonempty...
Monday, 11:19 AM
nuuskur
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fresh_42's post
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Proving differentiability for a function from the definition
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Because of the first sentence: Let ##f## be a differentiable function.
Monday, 10:56 AM
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