katz

1,264
Reputation
1060 views
Is this your account?

Registered User 

Name katz
Member for 6 months
Seen yesterday
Website
Location
Age
8

Questions
votes newest views recent
5

1

4

2

1

1
2
votes
1
answer
170
views

differential geometry using Robinson’s infinitesimals?

apr 2 at 12:11 Philip Ehrlich 1,289●1●5●11

1

2

 

35

Answers
votes newest views recent
16
A remark of Connes (3)
8
who invented projective space $\mathbb{P}^n$?
7
Surfaces filled densely by a geodesic
5
On closed simple curve with curvature at most 1
4
Curvature of contour lines of a scalar field
4
The Origin of the Musical Isomorphisms
3
In what ways did Leibniz’s philosophy foresee modern mathematics?
3
Can infinity shorten proofs a lot?
3
Nonstandard analysis in probability theory
3
Was the early calculus inconsistent?
3
Fixing a proof of the systolic inequality for higher genus surfaces
2
geometric interpretation of Lie bracket
2
Why can an infinite-order polynomial be written as the ratio of two finite-order polynomials?
2
Non-ZFC set theory and nonuniqueness of the hyperreals: problem solved?
2
Are all countable, nonstandard models of arithmetic given by ultrapowers?
1
Explaining the concept of projective space: notes for students
1
Would Euler’s proofs get published in a modern math Journal, especially considering his treatment of the Infinite?
1
Is displacement controled by stable norm?
1
Nonstandard definition for the generator of a standard Ito diffusion
1
Extensions of Carathéodory’s theorem
1
Minimize diameter of a tree
1
Geometry of Hopf fibrations and the fibration of Steifel Manfiolds over Grassmannians
1
Does some type of curvature require the space be an embedded manifold in a higher-dimensional space?
1
Is there an observer dependent mathematics?
1
Was Desargues more an Euclid or an Eudoxos?
0
About Sectional Curvature
0
injectivity radius of hyperbolic surface
0
Lapses of “the early proponents of the doctrine of limits”
0
What’s the definition of continuous of set-valued functions?
0
fundamental class is the sum of simplices of triangulation of the manifold?
1 2 next

 

79

Votes
73
6

 

53

Tags
× 13
× 10
× 9
× 7
× 6
× 5
× 4
× 4
× 3
× 3
 × 3
× 3
× 3
× 2
× 2
× 2
× 2
× 2
× 2
× 2
 × 2
× 2



















 

13

Badges
● Nice Answer
● Scholar
● Self-Learner
 ● Organizer
● Popular Question
● Nice Question
 ● Commentator
● Editor
● Critic
 ● Student
● Supporter
● Necromancer
 ● Teacher