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I was born to answer lhfs.


Dec
22
awarded  Autobiographer
Dec
22
awarded  Suffrage
Dec
22
answered Show there is no prime in a range of numbers
Dec
22
comment Show there is no prime in a range of numbers
You didn't mention divisible by 7 BTW. 5033 and 5047 are both divisible by 7. =)
Dec
22
revised Prove every odd integer is the difference of two squares
added hint
Dec
22
revised What constitutes an axiom - Spivak Calculus ch. 1
\cdot instead of asterisk, formatting
Dec
22
suggested suggested edit on What constitutes an axiom - Spivak Calculus ch. 1
Dec
22
answered Prove every odd integer is the difference of two squares
Dec
22
accepted Is a counterexample considered a rigorous proof that a property is not true?
Dec
22
answered Books in foundations of mathematical logic
Dec
22
revised Is a counterexample considered a rigorous proof that a property is not true?
added mathjax; fancy quotes
Dec
22
suggested suggested edit on Is a counterexample considered a rigorous proof that a property is not true?
Dec
22
answered Given real numbers: define integers?
Dec
22
comment Is a counterexample considered a rigorous proof that a property is not true?
+1 Love it! :-)
Dec
22
comment Is a counterexample considered a rigorous proof that a property is not true?
+1 Simple and sweet :)
Dec
22
asked Is a counterexample considered a rigorous proof that a property is not true?
Dec
22
revised How can I algebraically prove that $2^n - 1$ is not always prime?
added 30 characters in body; edited title
Dec
22
accepted How can I algebraically prove that $2^n - 1$ is not always prime?
Dec
22
comment How can I algebraically prove that $2^n - 1$ is not always prime?
@Markbennet: Oh yes, thanks.
Dec
22
comment How can I algebraically prove that $2^n - 1$ is not always prime?
And what would be the factored form of $2^{ab} - 1$? :-) P.S.: Hey Brian!