If $\log:\mathbb {C} \setminus (-\infty,0]\rightarrow \mathbb {C}$ is the principal branch of the complex logarithm, does it then have a primitive on $\ {z \in ...

I'm trying to understand basic computability notions, and I'm a bit confused concerning the following questions : Is the set of (Gödel numbers of) partial recursive functions recursive ? Is …

I have a question. How can we the quickest to test whether $x$ is a primitive root modulo $n$? On the Wikipedia page I found information about a possible algorithm ...

Sep 22, 2015 · Today I just began the study of differential equations, and I already have a question concerning the notation. This may seem trivial but I really want to understand the …

Sep 21, 2020 · Show that if a =m2 −n2 a = m 2 − n 2 , b = 2mn b = 2 m n, c = m2 +n2 c = m 2 + n 2 , where m m, n n are relatively prime, not both odd, and m> n m> n, then (a, b, c) (a, b, c) is …

Is this definition for primitive matrices correct? A square matrix $P \\geqslant 0$ is called primitive if there exists a power $k$ such that $P^k > 0,$ that is ...

Dec 12, 2022 · I want to show that subtraction is primitive recursive: $subtract(x,y)=x-y$. To do this, I must first show that pred function: $pred(x)=x-1$ is also primitive ...

Jun 21, 2015 · Until recently I assumed that primitive recursive relations are exactly $\\Delta^0_0$ (i.e. bounded) ones, but I learned they're different (the former is a proper superclass of the …

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I'm reading "A friendly introduction to number theory" and I'm stuck in this exercise, I'm mentioning this because what I need is a basic answer, all I know about primitive pythagorean triplets is ...