Math Geeks

Leetcode solving: 1470. Shuffle the Array

how many parts at most is a plane cut by n lines, how many parts at most is a space cut by n plane

three proof Sylvester rank inequality rankA+rankB less than rank AB+n

algebraic geometry: affine scheme (2) example of Spectrum of ring

Leetcode solving: 1290. Convert Binary Number in a Linked List to Integer

Leetcode 319 Bulb Switcher

integral of x/1+cosx, integral of x/1-cosx

1461 Check If a String Contains All Binary Codes of Size K

Leetcode 2119 A Number After a Double Reversal

Prove Woodbury matrix identity step by step

Leetcode solving: 1991. Find the Middle Index in Array

Leetcode solving: 1464. Maximum Product of Two Elements in an Array

Leetcode 868 Binary Gap

two versions of Azuma's inequality state and its proof

Group homomorphism and first group isomorphism theorem

Moment generating function and characteristic function of Exponential distribution

State and prove Liouville's Approximation Theorem and transcendental number

Prove the all invertible map forms an open set and the inverse map is continuous

Integral of e^ax cos bx dx

Liouville’s number, Approximation lemma and why it is transcendental number

GRE subject Math GR9768 solution Question 48

Leetcode 2130 Maximum Twin Sum of a Linked List

Leetcode 1281. Subtract the Product and Sum of Digits of an Integer

extremal graph theory: explain Erdos Stone Simonovits theorems

1791 Find Center of Star Graph

Solving Leetcode 263. Ugly Number (python)

1237. Find Positive Integer Solution for a Given Equation

Partition and Prove Euler Pentagonal theorem

Leetcode 1019 Next Greater Node In Linked List

Solvable groups and Sn, An is not solvable

Leetcode solving: 1103. Distribute Candies to People

Field extension application: Straightness and compass Constructible number

algebraic geometry Scheme theory affine scheme (1) zariski topology and vanishing set

Algebraic geometry: affine local (1) Reduced is an affine local property

affine scheme properties: distinguished open set forms a basis and quasi compact

Non affine schemes example 1 affine line with double origin is not affine

Brouwer fixed point theorem

Moment generating and characteristic function of Possion and uniform distribution

Explain the Fisher Yates Algorithm and leetcode 384. Shuffle an Array

easy Prove Hurwitz theorem in Number theory( Approximation theory)

Leetcode solving: 501. Find Mode in Binary Search Tree

Morera's Theorem Prove (complex analysis)

Leetcode solving: 1221. Split a String in Balanced Strings

Leetcode solving 1374 Generate a String With Characters That Have Odd Counts

1576 Replace All 's to Avoid Consecutive Repeating Characters

Normal subgroup and quotient subgroup

Leetcode 1641 Count Sorted Vowel Strings

showing Longest PATH is NP Complete

Leetcode solving: 541 Reverse String II

2022 Convert 1D Array Into 2D Array