23/02/26 17:24:16.72 ZAlHQVD3.net
>>788
>VARIETIES OF LOG GENERAL TYPE
LOG？か
下記”Kawamata log terminal singularities”辺りに由来しているような
URLﾘﾝｸ(en.wikipedia.org)
Abundance conjecture
In algebraic geometry, the abundance conjecture is a conjecture in birational geometry, more precisely in the minimal model program, stating that for every projective variety
X with Kawamata log terminal singularities over a field
k if the canonical bundle
K_{X} is nef, then
K_{X} is semi-ample.
Important cases of the abundance conjecture have been proven by Caucher Birkar.[1]
URLﾘﾝｸ(en.wikipedia.org)
Canonical singularity
They were introduced by Reid (1980). Terminal singularities are important in the minimal model program because smooth minimal models do not always exist, and thus one must allow certain singularities, namely the terminal singularities.
Pairs
・klt (Kawamata log terminal) if Discrep(X,Δ)>?1 and [Δ]<= 0