is there a need for new technologies ?, patris.gr, 19/9/2024
περί ηλεκτρονικού φακέλου υγείας, 4/2026
περί της Ελληνικής κρίσης χρέους 5/5/2026
short comments and opinions (in Greek)
- 2026
- bonds, Gates on AI, myAgro,
Stalin's doctors,
visiting the parliament,
Greece in numbers (eurostat),
latest divorce data in Greece (eurostat),
parking at Heraklion's city walls,
writing,
Αμερικανική επίθεση στο Ιραν...,
gender
- 2025
courses
growth in household real income per capita (2004-2024) (TBA)


'suppose that p
1=2 < p
2=3 < ... < p
r are all of the primes. Let P = p
1*p
2*p
3...p
r+1 and let p be a prime dividing P; then p can not be any of p
1, p
2, ..., p
r, otherwise p would divide the difference P-p
1*p
2*p
3...p
r = 1, which is impossible. So this prime p is still another prime, and p
1, p
2, ..., p
r would not be all of the primes', Euclid, 300 BC