[契约]不可能履行  impossible to perform

■（不可利用能）  anergy

ARROW不可能性定理  Arrow’s impossibility theorem

Bush连续不可微函数  Bush continuous and non-differentiable function

E－S不可收缩性  E-S unretractive

E不可满足性  E-unsatisfiability

James-Stein估计量不可容性  inadmissibility of James-Stein estimator

L不可分解矩阵  L-indecomposable matrices

O本质不可判定性  essential undecidability

Pitman估计量不可容性  inadmissibility of Pitman estimator

p-不可约  p-irreducibility

Q不可满足性  Q-unsatisfiability

r—不可分矩阵  r-indecomposable matrix

UMVUE不可容性  inadmissibility of UMVUE

ZG乐观不可否认协议  ZG optimistic non-repudiation protocol

μ(q)×λ-不可约  q)×λ-irreducibity

μ_qλ-不可约  qA-irreducibity

π-不可约  irreducible

π-不可约性  irreduciblity; properly essential

φ-不可约性  irreducibility