Deletion of Xin-She Yang's functions

Comment: as |Wikipedia is not for things made up one day. There are only references from Xin-She Yang
Stance: delete
Cited policy: Wikipedia:Wikipedia is not for things made up one day (WP:MADEUP)

Comment: notability not demonstrated in a |reliable secondary source
Stance: delete
Cited policy: Wikipedia:Reliable sources (WP:RS)