Reputation
2,595
Top tag
Next privilege 3,000 Rep.
Cast close & reopen votes
Badges
1 7 21
Impact
~24k people reached

Jan
22
comment SupLat and InfLat
It is not a contradiction, but isomorphism is much stronger than equivalence, so why not mention it?
Jan
21
comment SupLat and InfLat
thank you Berci. This is exactly what I thought. I am calling the ncatlab customer service...
Jan
21
accepted SupLat and InfLat
Jan
21
comment What is the “correct” way of making $\mathcal{P}(X)$ into a topological space?
I think your question/construction has to do with Alexandrov topology.
Jan
21
comment Relating categorical properties of arrows
ok! +1 . You can check also for epis and monos in ncatlab
Jan
21
comment Relating categorical properties of arrows
The title as it stands is not really meaningful. I would suggest something along the lines: "Relation between injections and monos".
Jan
21
comment Relating categorical properties of arrows
injection and surjection are not categorical afaik (they use elements of sets). they can be used in concrete categories though. The best/most general table I know is the one mentioned by Marco in his answer and found in the Joy of Cats. These implications are also implemented in the upcoming version of my WildCats package.
Jan
21
asked SupLat and InfLat
Jan
16
revised Demonstrate currying via homomorphism
edited small typos
Jan
16
comment Demonstrate currying via homomorphism
@HenningMakholm I fixed all typos
Jan
16
revised Demonstrate currying via homomorphism
edited small typos
Dec
27
awarded  Nice Question
Dec
24
comment A Tool to practice Categories / Allegories
@qartal yes, you have to type $BaseDirectory, or $UserBaseDirectory in Mathematica and see what folder location it gives back to you. Then place the package in that folder. These are standard operations for Mathematica users. Search the help file for $BaseDirectory to get more info.
Dec
20
answered A Tool to practice Categories / Allegories
Dec
20
comment A Tool to practice Categories / Allegories
I also do not understand. Please see my answer below.
Nov
21
comment Why is this not a category?
Indeed the claim is false. Does this category of monotone functions have a standard name?
Nov
21
comment Why is this not a category?
your first formula has typos, you may wish to correct it
Nov
17
awarded  Yearling
Nov
15
comment On conglomerates' axiom of choice(Category theory)
User45765 What book/text are you referring to? The "Joy of cats" perhaps?
Nov
11
comment Connection between categorical notion of adjunction and dual space/adjoint in vector spaces
Can you please quote some economics textbook using these mathematics? The introductory textbooks I am aware of , barely use calculus.