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# 339 Posts

 Jul 8 asked composition of relations and multiset relations Jul 4 answered Functions $f$ such that $f(z+1)-f(z)$ is holomorphic Jun 27 answered Negative exponents and positive numbers. Jun 27 answered How is the area of a circle calculated using basic mathematics? Jun 27 answered Non-example for vector space Jun 27 answered Can ∂x and ∂y in a derivate be seen as ∂ times x or ∂ times y? Jun 18 answered How to generate a random number between 1 and 10 with a six-sided die? Jun 8 answered Imitating smaller Rubik's cubes with bigger ones. May 15 answered What are the “building blocks” of a vector? May 14 answered If $ab=ba$, Prove $a^2$ commutes with $b^2$ May 12 answered Is an irrational number odd or even? May 12 answered How to Formulate this Linear Algebra Fact in a Coordinate Free way? May 9 answered Turing Machine Halting problem May 4 answered $\langle A,B\rangle = \operatorname{tr}(B^*A)$ May 3 answered If $f$ is injective and $g$ is injective, then $f \circ g$ is surjective. May 3 answered Can we have a one-one function from [0,1] to the set of irrational numbers? May 2 answered Intersection of two sets which are equivalence on set A is always equivalence? May 2 answered Give an example to show that convergence of $|x_n|$ does not imply the convergence of $x_n$ May 2 answered What does it mean for two matrices to be orthogonal? May 2 answered why are equivalence relations called so?