A same meaning or not problem:
Here we view differential operators as a generalization of pseudo-differential operators .
We consider pseudo-differential operators here as a generalization of differential operators .
****
[A]: no

A same meaning or not problem:
He has presented lectures and conference of the College Art Association in Toronto ( 2007 ) and at the Subtle Technologies Conference in New York ( 2002 ) .
He has presented papers and the College Art Association conference in Toronto ( 2007 ) and at the Subtle Technologies Conference in New York ( 2002 ) .
****
[A]: yes

A same meaning or not problem:
Jacopo Silvestri ( 16th -- 15th century ) was an Italian cryptographer and author .
Jacopo Silvestri ( 15th -- 16th century ) was an Italian cryptographer and author .
****
[A]: yes

A same meaning or not problem:
The film producer Sol Lesser , who had discovered Jackie Coogan , signed Breen for RKO Radio Pictures .
Sol Lesser , a film producer who had discovered Breen , signed Jackie Coogan at RKO Radio Pictures .
****
[A]:
no