Hagen Knaf

Unregistered less info
221 reputation
22
bio website
location
age
visits member for 4 years, 5 months
seen Jan 26 '10 at 9:45

Jun
25
awarded  Yearling
Aug
13
awarded  Good Answer
Jan
26
comment Generic fiber of morphism between non-singular curves
You need an algebraically closed base field in the statement. Otherwise there can be points $Q\in C_1$ such that the degree $[k(Q):k(\phi (Q))]>1$ in which case the number of points in the fibre $\phi^{-1}(\phi (Q))$ is less than the degree.
Jan
20
answered Representability of finite metric spaces
Jan
19
answered What are examples illustrating the usefulness of Krull (i.e., rank > 1) valuations?
Jan
19
answered What are examples illustrating the usefulness of Krull (i.e., rank > 1) valuations?
Dec
9
answered What does “linearly disjoint” mean for abstract field extensions?
Dec
2
answered Is (relatively) algebraically closed stable under finite field extensions?
Nov
26
answered Weil divisors on non Noetherian schemes
Nov
19
awarded  Nice Answer
Nov
18
awarded  Teacher
Nov
18
answered What's so great about blackboards?