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May
4
reviewed No Action Needed Evaluating area using an integral in polar coordinates
May
4
reviewed Approve How to find the solution of $T(n,m) = T((n-1),m) + T(n,(m-1))$ in terms of big $O$ notation?
May
4
answered Constructing regular expressions for languages
May
4
answered Covariant and Contravariant Functor of Fixed Set Question - Category of Sets
May
4
answered Where is the mistake in this argument?
May
4
answered Given that $f:V\rightarrow W$, prove that $v_1,..,v_n$ are linearly indipendent
May
4
reviewed Approve How to understand this informal description of the levels of the arithmetical hierarchy?
May
4
answered Proof that $f:\mathbb CG \to S$ given by $f(a)=a\cdot s$ is surjective
May
4
reviewed No Action Needed Factorising a cubic equation
May
4
reviewed No Action Needed Number of orbits for the action of Galois group G.
May
4
reviewed Leave Open Double integral over a parallelogram
May
4
reviewed Close How to approximate a trigonometric to make less computation complexity
May
4
reviewed Leave Open How does one establish that the set of even and odd numbers partition the set of integers?
May
4
reviewed Close How to find the average velocity of blood?
May
4
reviewed Leave Open Injective polynomial
May
4
reviewed Close Count increasing sequences
May
4
reviewed Leave Open Prove Euclid's lemma does not hold when $p$ is not prime.
May
4
reviewed Leave Open $x^2 \equiv a$ mod p, $x^2 \equiv b$ mod p, and $x^2 \equiv ab$ mod p, prove either all three are solvable or exactly one
May
4
reviewed Leave Open Vector Subspace for Differntial Equation
May
4
reviewed Close Is it true that the order of any quotient ring $\mathbb Z[i]/\langle a+ib \rangle $ is $a^2+b^2$ ? (where not both $a,b$ are zero)