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Number-theory
New post in Number-theory
Calculating Pisano periods for any integer
May 20th, 2020
number-theory
spoj
fibonacci-numbers
modular-arithmetic
the set $\{xm + ny : x,y \in Z^+\}$ contains all but a finite number of the positive integers.
February 10th, 2020
number-theory
For a positive integer $n$, prove that $\sum_{d|n}{\mu^2(d)/\phi(d)=n/\phi(n)}$
August 1st, 2022
number-theory
How find if a number is the sum of 2 perfect squares?
August 1st, 2022
algorithms
number-theory
Hausdorff dimension of the set of rational numbers within a certain interval?
August 1st, 2022
rational-numbers
metric-spaces
number-theory
elementary-number-theory
fractals
GCD and LCM of three numbers
August 1st, 2022
number-theory
algorithms
How many ways can the men not sit together and the women not sit together?
October 31st, 2020
combinatorics
number-theory
Modular exponentiation with Chinese Remainder Theorem
March 13th, 2020
prime-numbers
number-theory
modular-arithmetic
Proof that $ [2x] + [2y] \ge [x]+ [x+y] + [y]$?
August 1st, 2022
proof-verification
number-theory
ceiling-and-floor-functions
About the calculation of decimal digits of series up to the nth digit
May 3rd, 2020
sequences-and-series
numerical-methods
number-theory
calculus
If $a\bmod{m}$ has an inverse x, and if $b\bmod{m}$ has an inverse y, prove that $ab\bmod{m}$ has an inverse xy?
August 1st, 2022
number-theory
Shortest path between three nodes in a graph
August 1st, 2022
algorithms
graph-theory
number-theory
Find the value of the following Legendre Symbols and Use Gausslemma to compute each of the Legendre symbols below
August 1st, 2022
number-theory
quadratic-residues
quadratic-reciprocity
Minimum number of steps to reach a position
August 1st, 2022
number-theory
algorithms
Prove that 12 has no primitive root
August 1st, 2022
number-theory
elementary-number-theory
primitive root of modulo 9 and modulo 28
August 1st, 2022
number-theory
find out how many pairs of number that ...
December 3rd, 2020
number-theory
How to determine the key-matrix of a Hill cipher where the encrypted-message-matrix is not invertible?
April 28th, 2020
cryptography
number-theory
What is the probability that a random K-bit odd-number is prime?
August 1st, 2022
probability
number-theory
proof for even and odd integers --number theory
August 1st, 2022
number-theory
discrete-mathematics
If $a^2$ divides $b^3$, then $a$ divides $b$.
August 1st, 2022
number-theory
divisibility
Prove that $a$ is a primitive root $\bmod{p}$ if and only if $-a$ has order $\frac{p-1}{2}$
April 10th, 2020
primitive-roots
modular-arithmetic
prime-numbers
number-theory
Last digits using Euler's theorem
August 1st, 2022
modular-arithmetic
analysis
number-theory
elementary-number-theory
Group of Dirichlet Characters Modulo $q$ is Isomorphic to $(\mathbb{Z} / q\mathbb{Z})^*$
August 9th, 2020
analytic-number-theory
number-theory
group-isomorphism
How to check if a number say 'k' can be formed by adding any number of elements in set/array A?
December 10th, 2020
number-theory
algorithms
Prove that $ax^2 + by^2 \equiv c \pmod{p}$ has integer solutions
August 1st, 2022
pigeonhole-principle
contest-math
number-theory
Proof that $(2^m - 1, 2^n - 1) = 2^d - 1$ where $d = (m,n)$
February 5th, 2020
number-theory
elementary-number-theory
divisibility
congruences
All possible number combinations in decimal represenation of irrational numbers?
August 1st, 2022
number-theory
Is the 10's complement operation defined for a negative decimal number?
December 30th, 2020
number-theory
10's Complement of a negative decimal number
December 29th, 2020
number-theory
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