Mathematics – Learning English and Japanese

Wednesday, November 20, 2024

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Learning English and Japanese

For everyone learning English/Japanese

Art Corrected Diary Essay Mathematics Technology

Toru Jan 01, 2024Jan 08, 2024 Camera positions, dragon, fractal, Images, Mandelbrot set, Mandelbulb, mathematical formulas, Self-similar figure, Sequences, video

The Dragon in Mandelbrot

The Dragon in Mandelbrot マンデルブロのドラゴン Happy New Year! あけましておめでとうございます。 As 2024 is the year of the dragon, I drew a Read More

Essay Mathematics Numbers Science Uncorrected

Toru Dec 18, 2015Jan 07, 2024 365, average body temperature, interesting facts, Joker, magic square, playing cards, square numbers

365

This is my 365th post. 365 Previously, I wrote that a sum of playing cards number become 365 (when a Read More

Diary Essay History Mathematics Science Uncorrected

Toru May 27, 2015Jan 08, 2024 Collatz Conjecture, computer, even number, finite trial, natural number, number theory, odd number, unsolved problem

Collatz Conjecture

Today, I wrote a program source of Collatz Conjecture. 今日は、コラッツの問題のプログラムを書きました。 Although this is one of the unsolved problems in number Read More

Essay History Mathematics Uncorrected

Toru Mar 03, 2015Jan 06, 2024 diverges, Euler, natural number, primes, reciprocals

Sum of the Reciprocals of the Primes

Today, I’d like to talk about one of the most famous Euler’s story. Have you ever thought what the sum Read More

Mathematics Physics Science Uncorrected

Toru Feb 20, 2015Jan 06, 2024 15 times, 42 times, 439, 8 times, 804 km, 83 times, distance, earth, fold, force, galaxy, human height, math problem, moon, paper, thickness

A Way to Reach Moon by Folding a Paper

Today, I’d like to talk about a famous math problem. “In order to reach moon, how many times do you Read More

Diary Mathematics Problem-solving Programming Uncorrected

Toru Jan 31, 2015Jan 06, 2024 algorithm, divisible by 7, dynamic programming, elements, Pascal's triangle, Project Euler

Pascal’s Triangle

　I often solve some problems in the intervals between my study. Today, I chose a problem with Pascal’s triangle from Read More

Mathematics Probability Statistics Uncorrected

Toru Jan 10, 2015Jan 02, 2024 2000 coins, coin toss, heads, normal distribution, probability, tails

Coin Tossing Probability

Today, I want to talk about coin toss probability. Please imagine that you toss 2000 coins. Each coin will fall Read More