oh! my feauture:(

Always_~welcome

tnx lot

Yuor are very welcome :)

tnx that s nice.

“Do not worry about your difficulties in Mathematics.
I can assure you mine are still greater”
“As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to reality”.
“Pure mathematics is, in its way, the poetry of logical ideas”.
all quote by EA (Albert Einstein)