# Kevin O'Bryant

less info
reputation
33157
bio website front.math.ucdavis.edu/author/… location New York City age 43 member for 4 years, 1 month seen Nov 10 at 23:18 profile views 3,967
Research: additive number theory; combinatorial number theory. Faculty at City University of New York, at the Staten Island and Graduate Center campuses.

# 646 Actions

 Nov10 comment Most interesting mathematics mistake? That's what I had in mind, sorry for the confusion. But in my defense, can't circles on the surface of a torus have 4 intersections? And $p$-adic circles have infinitely many? Nov2 awarded Famous Question Oct21 awarded Yearling Sep21 awarded Notable Question Sep13 comment How to efficiently sample uniformly from the set of p-partitions of an n-set? If $N=a_1+\dots + a_k$ is a random integer partition, and $x_1,x_2,\dots,x_N$ is a random permutation, then $\{ \{ x_1,\dots,x_{a_1}\}, \{x_{a_1+1},\dots,x_{a_1+a_2} \}, \dots \}$ is a random set partition. It isn't clear to me that it won't be uniformly random. Jul12 awarded Nice Answer Jun25 awarded nt.number-theory Jun25 awarded Electorate Jun25 awarded Sportsmanship Jun25 awarded Excavator Jun20 awarded Good Answer May14 revised two boy scouts problems added link to wikipedia Apr8 awarded Nice Answer Mar20 awarded Nice Answer Mar12 comment From reducible polynomial to an irreducible one This is a ring (just not one with unity). In any case, the OP asked for "an algebraic construction". Mar7 answered From reducible polynomial to an irreducible one Feb19 comment Most inconsistent ranking Call the matrix $M=(m_{ij})$. Then, if I understand correctly, total sum of the variance of each row'' is defined to be $\sum_{i=1}^k \frac1n \sum_{j=1}^n (m_{ij}-\frac 1n \sum_{\ell=1}^n m_{i\ell})^2$. Feb19 revised Most inconsistent ranking changed sd to variance Feb19 revised Most inconsistent ranking added $k=3$ Feb19 answered Most inconsistent ranking
{"extraction_info": {"found_math": true, "script_math_tex": 0, "script_math_asciimath": 0, "math_annotations": 0, "math_alttext": 0, "mathml": 0, "mathjax_tag": 0, "mathjax_inline_tex": 1, "mathjax_display_tex": 0, "mathjax_asciimath": 1, "img_math": 0, "codecogs_latex": 0, "wp_latex": 0, "mimetex.cgi": 0, "/images/math/codecogs": 0, "mathtex.cgi": 0, "katex": 0, "math-container": 0, "wp-katex-eq": 0, "align": 0, "equation": 0, "x-ck12": 0, "texerror": 0, "math_score": 0.3598027527332306, "perplexity": 4359.230201828324}, "config": {"markdown_headings": true, "markdown_code": true, "boilerplate_config": {"ratio_threshold": 0.18, "absolute_threshold": 10, "end_threshold": 15, "enable": true}, "remove_buttons": true, "remove_image_figures": true, "remove_link_clusters": true, "table_config": {"min_rows": 2, "min_cols": 3, "format": "plain"}, "remove_chinese": true, "remove_edit_buttons": true, "extract_latex": true}, "warc_path": "s3://commoncrawl/crawl-data/CC-MAIN-2013-48/segments/1386163994768/warc/CC-MAIN-20131204133314-00069-ip-10-33-133-15.ec2.internal.warc.gz"}