User contributions for Gispzjz
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30 March 2025
- 16:3216:32, 30 March 2025 diff hist +37 组合数学 (Spring 2025) →Announcement current
20 March 2025
- 04:3904:39, 20 March 2025 diff hist 0 组合数学 (Spring 2025)/Problem Set 1 No edit summary current
16 March 2025
- 15:3215:32, 16 March 2025 diff hist +30 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:3015:30, 16 March 2025 diff hist 0 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:2915:29, 16 March 2025 diff hist −1 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:2915:29, 16 March 2025 diff hist −23 组合数学 (Spring 2025)/Problem Set 1 No edit summary
- 15:2515:25, 16 March 2025 diff hist +402 组合数学 (Spring 2025)/Problem Set 1 No edit summary
- 15:1415:14, 16 March 2025 diff hist +163 组合数学 (Spring 2025) →Announcement
- 15:1115:11, 16 March 2025 diff hist +284 组合数学 (Spring 2025)/Problem Set 1 →Problem 2
- 15:0815:08, 16 March 2025 diff hist −1 组合数学 (Spring 2025)/Problem Set 1 →Problem 4 Tag: Manual revert
- 15:0815:08, 16 March 2025 diff hist +1 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:0715:07, 16 March 2025 diff hist +74 组合数学 (Spring 2025)/Problem Set 1 →Problem 5
- 15:0615:06, 16 March 2025 diff hist −205 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:0615:06, 16 March 2025 diff hist 0 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:0615:06, 16 March 2025 diff hist +2 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:0515:05, 16 March 2025 diff hist +383 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:0415:04, 16 March 2025 diff hist −41 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:0315:03, 16 March 2025 diff hist +1 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:0315:03, 16 March 2025 diff hist +11 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:0315:03, 16 March 2025 diff hist +32 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:0215:02, 16 March 2025 diff hist +2 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 15:0115:01, 16 March 2025 diff hist +1 组合数学 (Spring 2025)/Problem Set 1 →Problem 4
- 14:5914:59, 16 March 2025 diff hist +172 组合数学 (Spring 2025)/Problem Set 1 No edit summary
- 14:5614:56, 16 March 2025 diff hist +214 组合数学 (Spring 2025)/Problem Set 1 No edit summary
- 14:5314:53, 16 March 2025 diff hist +1,419 N 组合数学 (Spring 2025)/Problem Set 1 Created page with "== Problem 1 == Fix positive integers <math>n</math> and <math>k</math>. Let <math>S</math> be a set with <math>|S|=n</math>. Find the numbers of <math>k</math>-tuples <math>(T_1,T_2,\dots,T_k)</math> of subsets <math>T_i</math> of <math>S</math> subject to each of the following conditions separately. Briefly explain your answer. * <math>T_1\subseteq T_2\subseteq \cdots \subseteq T_k.</math> * The <math> T_i</math>s are pairwise disjoint. * <math> T_1\cup T_2\cup \cdots..."
- 14:5314:53, 16 March 2025 diff hist +61 组合数学 (Spring 2025) →Assignments
18 February 2025
- 10:0110:01, 18 February 2025 diff hist +6 组合数学 (Spring 2025) →Course info
- 09:2909:29, 18 February 2025 diff hist 0 组合数学 (Spring 2025) No edit summary
- 09:2809:28, 18 February 2025 diff hist +1,438 N 组合数学 (Spring 2025)/Course materials Created page with "== Textbooks == {|border="2" cellspacing="4" cellpadding="3" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse;empty-cells:show;" |border|100px |width="100%"| :J. H. van Lint and R. M. Wilson. ''A course in Combinatorics, 2nd Edition.'' Cambridge University Press, 2001. |- |border|100px|| :S. Jukna. ''Extremal Combinatorics: With Applications in Computer Science, 2nd Edition..." current
- 09:2809:28, 18 February 2025 diff hist 0 组合数学 (Spring 2025) →Course materials
- 09:2609:26, 18 February 2025 diff hist −2 组合数学 (Spring 2025) No edit summary
- 09:2509:25, 18 February 2025 diff hist −3 组合数学 (Spring 2025) →Course info
- 09:2509:25, 18 February 2025 diff hist +1,618 组合数学 (Spring 2025) No edit summary
- 09:2309:23, 18 February 2025 diff hist +39,712 N 组合数学 (Spring 2025)/Basic enumeration Created page with "== Basic Enumeration == The three basic rules for enumeration are: *'''The sum rule''': for any '''''disjoint''''' finite sets <math>S</math> and <math>T</math>, the cardinality of the union <math>|S\cup T|=|S|+|T|</math>. *'''The product rule''': for any finite sets <math>S</math> and <math>T</math>, the cardinality of the Cartesian product <math>|S\times T|=|S|\cdot|T|</math>. *'''The bijection rule''': if there exists a bijection between finite sets <math>S</math> a..." current
- 09:2309:23, 18 February 2025 diff hist +2 组合数学 (Spring 2025) →Lecture Notes
- 09:2109:21, 18 February 2025 diff hist +39,712 N 组合数学 (Fall 2025)/Basic enumeration Created page with "== Basic Enumeration == The three basic rules for enumeration are: *'''The sum rule''': for any '''''disjoint''''' finite sets <math>S</math> and <math>T</math>, the cardinality of the union <math>|S\cup T|=|S|+|T|</math>. *'''The product rule''': for any finite sets <math>S</math> and <math>T</math>, the cardinality of the Cartesian product <math>|S\times T|=|S|\cdot|T|</math>. *'''The bijection rule''': if there exists a bijection between finite sets <math>S</math> a..." current
- 09:2109:21, 18 February 2025 diff hist +2 组合数学 (Spring 2025) →Lecture Notes
- 09:2109:21, 18 February 2025 diff hist +80 组合数学 (Spring 2025) →Lecture Notes
- 09:2009:20, 18 February 2025 diff hist −118 组合数学 (Spring 2025) →Lecture Notes Tag: Visual edit
- 09:1909:19, 18 February 2025 diff hist −1 组合数学 (Spring 2025) →Lecture Notes
- 09:1809:18, 18 February 2025 diff hist +8,827 N 组合数学 (Spring 2025) Created page with " This is the webpage for the ''Combinatorics'' class of Spring 2024. Students who take this class should check this page periodically for content updates and new announcements. = Announcement = = Course info = * '''Instructor ''': 尹一通 ([http://tcs.nju.edu.cn/yinyt/ homepage]) :* '''email''': yinyt@nju.edu.cn :* '''office''': 计算机系 804 * '''Teaching assistant''': ** [https://lhy-gispzjz.github.io/ 刘弘洋] ([mailto:liuhongyang@smail.nju.edu.cn liuhongy..." Tag: Visual edit
12 June 2024
- 13:1713:17, 12 June 2024 diff hist 0 组合数学 (Spring 2024) →Announcement
- 13:1613:16, 12 June 2024 diff hist +36 组合数学 (Spring 2024) →Announcement
- 13:1613:16, 12 June 2024 diff hist +95 组合数学 (Spring 2024) →Announcement
14 May 2024
- 15:5515:55, 14 May 2024 diff hist +1 组合数学 (Spring 2024)/Problem Set 3 →Problem 5
- 15:5515:55, 14 May 2024 diff hist +2,925 N 组合数学 (Spring 2024)/Problem Set 3 Created page with "== Problem 1 == Solve the following two existence problems: * You are given <math>n</math> integers <math>a_1,a_2,\dots,a_n</math>, such that for each <math> 1\leq i\leq n</math> it holds that <math>i-n\leq a_i\leq i-1</math>. Show that there exists a '''nonempty''' subsequence (not necessarily consecutive) of these integers, whose sum is equal to <math> 0 </math>. (Hint: Consider <math> b_i=a_i-i </math>) * You are given two '''multisets''' <math> A </math> and <ma..."
- 15:2415:24, 14 May 2024 diff hist +61 组合数学 (Spring 2024) →Assignments