Matt Gregory
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### Questions (25)

 53 Why are primes considered to be the “building blocks” of the integers? 15 Using Vieta's theorem for cubic equations to derive the cubic discriminant 11 Why is $\int^\infty_{-\infty} \frac{x}{x^2+1} dx$ not zero? 7 Is it always valid to cancel something like (x-2) in the numerator and denominator of a rational function? 7 Proof there is a 1-1 correspondence between an uncountable set and itself minus a countable part of it

### Reputation (937)

 +5 Using Vieta's theorem for cubic equations to derive the cubic discriminant +15 Why are primes considered to be the “building blocks” of the integers? +10 Understanding proof of Farkas Lemma +5 Proving a linear system $A\bf{x} = \bf{b}$ is consistent iff the rank of ($A\;|\;\bf{b}$) equals the rank of $A$

 3 introduction to isomorphisms and homomorphism 1 How do I manage the limits of this double integral? 1 Branch of math studying relations 1 Linear Programming Books 0 Propositional logic: Finding a formula F with statement variables from truth table

### Tags (26)

 3 abstract-algebra × 4 1 reference-request 1 calculus × 7 1 relations 1 integration × 2 0 linear-algebra × 6 1 linear-programming × 2 0 algebra-precalculus × 4 1 optimization 0 elementary-set-theory × 3

### Accounts (18)

 Stack Overflow 1,512 rep 21727 Mathematics 937 rep 1122 English Language & Usage 200 rep 6 Mathematica 158 rep 5 Area 51 151 rep