205 reputation
18
bio website
location
age
visits member for 2 years, 3 months
seen 3 hours ago

2d
asked Is soft evidence hard for Belief Propagation algorithms? What am i missing?
Jun
25
comment Is time acting implicitly in this case?
Without further information i would suppose it is a mistake and should be x instead of t...
Jun
18
comment The last number of infinity
I should add that there are nonstandard models of arithmethic that contain a number (let's call it c) that is greater than all natural numbers. However, in such a model there still is not a "biggest, last" number, as one can show that in such models there exist also the numbers 2c, 3c, etc. Also i'm not sure how useful such models really are :-P
Jun
6
comment 'Obvious' theorems that are actually false
@StevenStadnicki Ok, i think i see, can you point me somewhere where this is made explicit (in the linked wikipedia article, it is producing a counterexample but doesn't say anything about "continuity isn't preserved across an infinite number of operations".
Jun
5
awarded  Commentator
Jun
5
comment 'Obvious' theorems that are actually false
That sounds quite broken, is that not in contradiction to the commutativity of addition?
May
28
comment Why doesn't mathematical induction work backwards or with increments other than 1?
you forgot that it is not allowed to have an infinie descending chain in your order relation. Otherwise, induction is going to break down. In fact, you don't need a successor function, you only need a well-founded relation en.wikipedia.org/wiki/Well-founded_relation The induction described in the linked wikipedia article is about the most general form i know of.
Apr
22
comment What was the first bit of mathematics that made you realize that math is beautiful? (For children's book)
Just found a fairly long wikipedia article on this en.wikipedia.org/wiki/0.999...
Apr
8
awarded  Yearling
Mar
31
answered Dividing 100% by 3 without any left
Mar
27
comment Do syllogisms apply to probabilistic statements?
As long as the distribution is the same as in my example, and the other latent variables are not observed (only observation is my tummy ache), then yes. I was thinking of a direct connection between jelly beans and tummy aches, but it works in any network where those three equations are true, and only tummy aches are observed.
Mar
27
answered Do syllogisms apply to probabilistic statements?
Jan
3
comment Do we know if there exist true mathematical statements that can not be proven?
As far as i understand the role of axioms, axioms describe the set of possible models. Undecidable axioms would be things like "Every model that suffices this axiom is a halting computer program"
Dec
18
comment What was the first bit of mathematics that made you realize that math is beautiful? (For children's book)
What about this question: If 0.9999... != 1, what is 1 - 0.99999....?
Nov
6
comment Is math built on assumptions?
maybe add that in proofs, we assume the premises to be true just to make our life easier - otherwise the whole premises need to be carried around the whole time. Case distinction is similar, as well. (Or making an assumption is a form of case distinction - if the premises are false, then the whole statement is true, at least according to the logics i know of)
Sep
19
accepted How do you call the line y=0?
Sep
19
awarded  Student
Sep
19
comment How do you call the line y=0?
@Clayton the ticks and the tick labels are at the bottom of the plot, which is at y=-0.25. I thought this was the x-Axis?!
Sep
19
asked How do you call the line y=0?
Sep
3
awarded  Tumbleweed