Repositorio Institucional de la Universidad de Oviedo

Now showing items 1-18 of 18

Counting invertible sums of squares modulo n and a new generalization of Euler's totient function

Calderón, Catalina; Grau Ribas, José María; Oller Marcén, Antonio M.; Toth, Laszlo (2015)
Fermat test with Gaussian base and Gaussian pseudoprimes

Grau Ribas, José María; Oller Marcén, Antonio M.; Rodríguez, Manuel; Sadornil, Daniel (2015)
Generalized Quaternion Rings over Z/ nZ for an Odd n

Grau Ribas, José María; Miguel, Celino; Oller Marcén, Antonio M. (2018)
Giuga numbers and the arithmetic derivative

Grau Ribas, José María; Oller Marcén, Antonio M. (2012)
An (o)over-tildeo(log(2)(n)) time primality test for generalized cullen numbers

Grau Ribas, José María; Oller Marcén, Antonio M. (2011)
On a variant of Giuga numbers

Grau Ribas, José María; Luca, Florian; Oller Marcén, Antonio M. (2011)
On power sums of matrices over a finite commutative ring

Fortuny Ayuso, Pedro; Grau Ribas, José María; Oller Marcén, Antonio M.; Fernández Rúa, Ignacio (2017)
On the Base-b Expansion of the Number of Trailing Zeros of bk!

Oller Marcén, Antonio M.; Grau Ribas, José María (European Mathematical Society (EMS), 2011)
On the congruence 1(m)+2(m) + center dot center dot center dot m(m) equivalent to n (mod m) with n vertical bar m

Grau Ribas, José María; Oller Marcén, Antonio M.; Sondow, Jonathan (2015)
On the diameter of the commuting graph of the full matrix ring over the real numbers

Grau Ribas, José María; Oller Marcén, Antonio M.; Tasis Montes, María del Carmen (2017)
On the last digit and the last non-zero digit of nn in base b

Grau Ribas, José María; Oller Marcén, Antonio M. (2014)
On the Structure of Quaternion Rings Over Z/nZ

Grau Ribas, José María; Miguel, C.; Oller Marcén, Antonio M. (2015)
On the Zero Divisor Graphs of the Ring of Lipschitz Integers Modulo n

Grau Ribas, José María; Miguel, C.; Oller Marcén, Antonio M. (2017)
Power sums over finite commutative unital rings

Grau Ribas, José María; Oller Marcén, Antonio M. (2017)
A PRIMALITY TEST FOR Kp(n)+1 NUMBERS

Grau Ribas, José María; Oller Marcén, Antonio M.; Sadornil, Daniel (2015)
Solutions of the congruence 1+2f (n) + . . . + nf (n) equivalent to 0 (mod n)

Grau Ribas, José María; Moree, Pieter; Oller Marcén, Antonio M. (2016)
Variations on Giuga Numbers and Giuga’s Congruence

Grau Ribas, José María; Oller Marcén, Antonio M. (2016)
A von Staudt-type result for Sigma(z is an element of Zn[i]) z(k)

Fortuny Ayuso, Pedro; Grau Ribas, José María; Oller Marcén, Antonio M. (2015)