不失一般性

bùshīyībānxìng
  1. (mathematics) without loss of generality; wlog
  2. without loss of generality; wlog

Wiktionary

Entry Composition

1 不失 bùshī still possesses; yet retains (some positive attribute that contrasts with another of its attributes)
2 一般性 yībānxìng
  1. general
  2. generality