3 papers
math.NT2026
An additive problem in connection with some quadratic real fields with class number one
Alexandru Gica
Our aim is to find all the prime numbers such that has at most two different prime factors, for all the odd integers such that . We solve entirely the cases…
math.NT2024
Class numbers, Ono invariants and some interesting primes
Alexandru Gica
The main purpose of this paper is to find all the prime numbers p for which whenever we add to p an odd square less than p we obtain a number which has at most two different prime…
math.AC2024
Lifting multiplicative lattices to ideal sytems
Tiberiu Dumitrescu, Mihai Epure, Alexandru Gica
We present a mechanism which lifts a multiplicative lattice to a (weak) ideal system on some monoid.