Sentence examples for which are not collapsable from inspiring English sources

There are some *-recursively complexes which are not collapsable (see Figure 4).

Figure 4 A construction of *-recursively contractible complex which is not collapsable.

Which data are sensitive, which are not?

Changes which are not intrinsic are extrinsic.

Do isometric exercises which are not obvious.

Which aren't many.

Figure 2 Collapsable complex K ≤ 2 (contains all possible 2-simplices on the picture) which is not retractable.

Which is not good.

Which is not ideal.

"Which, ah, which is not ideal".

Which was not entirely true.