Assertion: sequence | /r/HasProperty | exact
Facets:
value: at the first
type: TEMPORAL
value: at the position
type: LOCATION
value: at the a and c spots
type: LOCATION
Source sentences:
text: It remains to show that this sequence is exact at the A and C spots.
text: Therefore, the sequence 0 → X → Y → 0 is exact if and only if the map from X to Y is both a monomorphism and epimorphism (that is, a bimorphism), and thus, in many cases, an isomorphism from X to Y.
text: the image of the map 0 → Z is {0}, and the kernel of multiplication by 2 is also {0}, so the sequence is exact at the first Z .
text: is {0}, and the kernel of multiplication by 2 is also {0}, so the sequence is exact at the first .
text: the image of multiplication by 2 is 2 Z , and the kernel of reducing modulo 2 is also 2 Z , so the sequence is exact at the second Z .
text: , and the kernel of reducing modulo 2 is also 2 , so the sequence is exact at the second .
text: the image of reducing modulo 2 is Z/2Z, and the kernel of the zero map is also Z/2Z, so the sequence is exact at the position Z/2Z.