Profile

Cover photo
Andres Caicedo
Lives in Ann Arbor
3,668 followers|190,965 views
AboutPostsPhotosVideos

Stream

Andres Caicedo

Shared publicly  - 
 
 
Henstock's lectures on Henstock integration

Of course, this notion of integral has many other names, but these notes (~130 page) look to be rather nice

http://arxiv.org/abs/1602.02993

Title: Ralph Henstock's Lectures on the Theory of Integration
Authors: Ralph Henstock, Pat Muldowney

Abstract: These are the class notes of lectures given by Ralph Henstock at the New University of Ulster in 1970-71. The notes deal with the Riemann-complete integral (also known as the generalized Riemann integral, the gauge integral, and the Henstock-Kurzweil integral). They also introduce Henstock's abstract theory of integration.

Comments: Ralph Henstock (d. 2007) is the author of these notes. Pat Muldowney is the note-taker (1970-71) and editor (2015)

#arXiv  
Abstract: These are the class notes of lectures given by Ralph Henstock at the New University of Ulster in 1970-71. The notes deal with the Riemann-complete integral (also known as the generalized Riemann integral, the gauge integral, and the Henstock-Kurzweil integral).
2 comments on original post
1
Add a comment...

Andres Caicedo

Shared publicly  - 
 
 
Registration for the Twelfth Symposium on General Topology – Toposym 2016 is now open. The conference will take place in Prague, Czech Republic on July 25–29, 2016.

The following people have accepted our invitation to present plenary lectures: A. Arhangel'skii, L. Aurichi, D. Dikranjan, A. Dow, M. Hrušák, O. Kalenda, A. Kechris, P. Koszmider, M. Krupski, W. Kubis, A. Kwiatkowska, J. Lopez-Abad, V. Martinez de la Vega, J. Melleray, J. van Mill, A. Miller, J. Moore, C. Mouron, L. Nguyen Van Thé, L. Oversteegen, C. Rosendal, M. Sabok, S. Solecki, L. Soukup, M. Tkachenko, S. Todorcevic, T. Usuba, B. Weiss.

More info and registration at http://www.toposym.cz/
View original post
1
Timothy Gowers's profile photoDavid Chodounsky's profile photoAndres Caicedo's profile photo
6 comments
 
Thank you, +David Chodounsky.
Add a comment...

Andres Caicedo

Shared publicly  - 
 
 
#mathematics   accelerating the speed of convergence of a series , an example with zeta(2)  http://goo.gl/4DzLwz
View original post
4
1
Tag Pillay's profile photo
Add a comment...

Andres Caicedo

Shared publicly  - 
 
 
Frankl's union-closed conjecture is the following easy sounding statement. Let A_1,...,A_n be n subsets of a set X and suppose that for each i and j the union of A_i and A_j is one of the subsets (so the collection of sets is closed under taking unions). Then there is an element x of X that belongs to at least n/2 of the sets.

Seems simple? Then why not help me prove it? But I should mention, by way of a mild warning, that it is not even known whether there must be an element of X that belongs to at least n/1,000,000 of the sets (or indeed cn for any fixed constant c>0). But in a way that makes it easier to make progress -- even a statement that falls quite some way short of the conjecture would be an advance. 
6 comments on original post
1
Add a comment...

Andres Caicedo

Shared publicly  - 
 
 
The 27th ACM-SIAM Symposium on Discrete Algorithms , in Arlington, Virginia, just finished, along with its satellite workshops ALENEX (experimental algorithmics, one of the most heavily rejected topics from SODA) and ANALCO (analytic combinatorics). With four parallel sessions going at most…
View original post
1
Add a comment...

Andres Caicedo

Shared publicly  - 
 
 
The preprint from Laci Babai that we've all been waiting for.
Abstract: We show that the Graph Isomorphism (GI) problem and the related problems of String Isomorphism (under group action) (SI) and Coset Intersection (CI) can be solved in quasipolynomial ($\exp((\log n)^{O(1)})$) time. The best previous bound for GI was $\exp(O(\sqrt{n\log n}))$, ...
1 comment on original post
5
Add a comment...

Andres Caicedo

Shared publicly  - 
1
Add a comment...
Have him in circles
3,668 people
Kim Snyder's profile photo
Eric Smalley's profile photo
Undang Dodi's profile photo
Dinh VideosYes's profile photo
Anthony FLORES's profile photo
R. Mayer's profile photo
Tünde Polanek's profile photo
arhez law's profile photo
Stephen Craft's profile photo

Andres Caicedo

Shared publicly  - 
 
 
The Twitter image of the email seems to have disappeared from the Science news article and from Twitter, so here it is. edit: hmm, I can see it on my phone, but not on my laptop. Could be a cache thing?

(Thanks to http://elanormal.com/posts/28051-rumor-mill-heats-up-again-for-discovery-of-gravitational-waves for keeping a copy, where you can find the usual warnings that this is not confirmed or released etc.)

Personally, I would be totally :-D if the team put the paper on the arXiv, like all other sensible astrophysicists did. I don't think the glossy mags would pass up a chance to publish one of the major findings in physics merely because there was a preprint, no?

#gravitationalWaves  
3 comments on original post
1
Add a comment...

Andres Caicedo

Shared publicly  - 
 
 
Alan Moore's Levitz Grid for all 12 issues of Big Numbers, continued on the next double page spread! Illustration from "Alan Moore: Storyteller" by Gary Spencer Millidge.

While it definitely is a Levitz Grid, it doesn't use the Levitz Paradigm. In those terms, the plot progression is:

DEFGHIJKLMNOPQRSTUVWXYZ...
ABCDEFGHIJKLMNOPQRSTUVWXYZ...
ABCDEFGHIJKLMNOPQRSTUVWXYZ...
ABCDEFGHIJKLMNOPQRSTUVWXYZ...

Until issue 11, where he wanted to add yet another letter.

More on the Levitz Grid and Paradigm here: https://plus.google.com/116234966919830684742/posts/agG3z6KTJcW
3 comments on original post
1
Add a comment...

Andres Caicedo

Shared publicly  - 
 
 
Starting next week, reviewers get 12 AMS points for every review published in MathSciNet.
View original post
4
Yemon Choi's profile photo
2 comments
 
Or the MathReviews written on hard papers by people whose work I've had to reject for really bad errors
Add a comment...

Andres Caicedo

Shared publicly  - 
 
 
Last year I said that I am learning Common-Lisp with a grapher for relationships between consequences of the Axiom of Choice in mind. A year later, the core of a first version of this program is finished and uploaded on GitHub:…
Last year I said that I am learning Common-Lisp with a grapher for relationships between consequences of the Axiom of Choice in mind. A year later, the core of a first version of this program is fi…
View original post
3
Add a comment...

Andres Caicedo

Shared publicly  - 
 
 
We're hiring at Mathematical Reviews!

Mathematical Reviews has an open position for an Associate Editor. We are looking for someone with expertise in algebraic geometry, or related fields such as commutative algebra or group theory. The official announcement is here: http://www.ams.org/about-us/AssociateEditor2015.pdf. You can also find it on MathJobs: http://www.mathjobs.org/jobs/jobs/7509. Mathematical Reviews is a great place to work, and Ann Arbor is a great place to live. #algebraicgeometry 
Full service online faculty recruitment site for mathematical institutions worldwide, offered by the American Mathematical Society (AMS).
View original post
1
Add a comment...
People
Have him in circles
3,668 people
Kim Snyder's profile photo
Eric Smalley's profile photo
Undang Dodi's profile photo
Dinh VideosYes's profile photo
Anthony FLORES's profile photo
R. Mayer's profile photo
Tünde Polanek's profile photo
arhez law's profile photo
Stephen Craft's profile photo
Work
Occupation
Mathematician
Employment
  • Math Reviews, 2015 - present
Basic Information
Gender
Male
Story
Introduction
Mathematician.  Associate editor at Math Reviews. Father of two.
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Ann Arbor
Previously
Boise, ID - Bogotá, Colombia - Oakland, CA - El Cerrito, CA - Vienna - Pasadena, CA - Ann Arbor