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2d
accepted How does $\mathcal{A}\cup \mathcal{B}$ indicates that there is at least one augmenting path on $\mathcal{A}$?
Dec
3
accepted Is there a garden of derivatives?
Dec
3
accepted Are there two notions of flow?
Dec
3
accepted How many different ways are there from $(0,0,0)$ to the point $(4,3,5)$?
Dec
3
accepted Why $f^{+}(v)-f^-(v) =val(f)$ if $v$ is the source?
Dec
3
accepted Why does the terminal set have exactly one element?
Dec
2
accepted How $a_{13}=0$ in $\begin{bmatrix} {2}&{1}&{0}\\ {1}&{3}&{5} \end{bmatrix}$?
Nov
27
accepted Is my idea of incoming/outgoing arcs correct?
Nov
26
accepted Show that if $a,k\in \mathbb{Z}$ with $0\leq k \leq a$, then $\binom ak=\frac{a!}{k!(a-k)!}=\binom {a}{a-k}$.
Nov
25
accepted A small confusion in network flows (conservation constraints).
Nov
22
accepted What is $\Gamma(a)$?
Nov
22
accepted Showing the equality of two rook polynomials.
Nov
18
accepted Silly mistake on evaluating the sixth term of $\left (\frac{a}{b}+\frac{b}{a^2}\right)^{17}$?
Nov
15
accepted Given the points $A,B,C,D$ in a straight line $m$ and $A,E,F,G$ in a straight line $n$, how many triangles can be formed with these points?
Nov
1
accepted Is it possible to express the idea of a number bigger than any other number ($\infty$) in programming languanges?
Oct
26
accepted Finite models for Systems of Incidence and Parallelism Axioms?
Oct
25
accepted Is there something that studies equivalent forms of writing and expression?
Oct
15
accepted Is $\frac{4n^2+4n+1}{8}$ an integer for any $n\in \mathbb{N}$?
Oct
6
accepted What are the faces of $Id_{A}$?
Oct
5
accepted Does the absence of horizontal lines shows that there are no $n,m\in \mathbb{N}$ such that $n^2=2m^2$?