Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options not deleted user 50468

Singularities in algebraic/complex/differential geometry and analysis of ODEs/PDEs. Singular spaces, vector fields, etc.

1 vote

Scheme-theoretic image and delta-invariants

Without any stronger hypothesis connecting $f$ and $g$ you should not expect that to happen. The simplest instance is when $(X,o)$ is alrealdy non singular, say dimension 2: $(\mathbb{C}^2,o)$. In thi …
amateur's user avatar
  • 375
8 votes
Accepted

General conditions for normality of blow-up

Let $X=Spec(R)$. Blowing-up $Z=V(I)$ is the same as to look at $Proj$ of the graded ring $R[It]=\oplus_{j\geqslant 0} I^jt^j\subset R[t]$, the Rees ring associated to $I$. Assume $R$ is a domain, inte …
amateur's user avatar
  • 375
0 votes

Applying analytic coordinate changes to singular function germs

Analytic change of coordinates in $(\mathbb{C}^3,0)$ must take $0$ to $0$. So they are induced by (local) $\mathbb{C}$-automorphisms of $\mathcal{O}_{\mathbb{C}^3,0}=\mathbb{C}\{x,y,z\}$ taking $\math …
amateur's user avatar
  • 375