alias: mathematics

• Subset/SuperSet

  • A contained in B
    • A is subset B
    • B is superset of A

• 3e+3 = 3 * 10^+3 = 3000

• 3e-3 = 3 _ 10^-3 = 3 _ 1/10^3 = 0.003

• math is elegate precision instead of sharp

Percentage

calculate relative change(From - To)

((To - From) / From)

With a value "from" of 5.7s and "to" of 2.1s

2.1 - 5.7 = -3.6
3.6 / 5.7 = -0.63157895
# format to percent
0.63157895 * 100 = -63.157895 %

Rounding to two decimal places would yield a decrease in the speed index of 63.16%.

courses

• https://www.kristakingmath.com/

Notes

• This is the difference between the change in percentage and the change in percentage points. A very important distinction!
• Different ways people calculate in their heads
• Mathematicians
  • https://en.wikipedia.org/wiki/Edward_Witten
• math prices
  • https://de.wikipedia.org/wiki/Fields-Medaille

books

• https://en.wikipedia.org/wiki/How_to_Solve_It
• Thinking In Numbers: On Life, Love, Meaning, and Math by Daniel Tammet
• The Cosmic Calculator: A Vedic Mathematics for Schools (India's Scientific Heritage) similar to Trachtenberg-System
• An Introduction To Mathematics by whitehead

courses

• https://www.mathacademy.com/

Links

• https://www.3blue1brown.com/
  • change in percentage and the change in percentage points
• https://dev.to/worldindev/finally-how-to-understand-math-awesome-resource-list-4end
• Basics of math
• Finally - How to understand math - Awesome resource list
• https://de.m.wikipedia.org/wiki/Riemannsche_Geometrie
• A Mathematician's Lament
• bouncy numbers explanation
• Useful mathematics
• Get The Math
• Required 5 Math Skills for Programming | Prime Reacts]
  1. Combination
  2. Logarithm
  3. Factorial
  4. Exponentials
  5. Modulus
• The Math Sorcerer ]
• A math course/app built entirely around modern interactive media, for people unsatisfied by conventional study. Early access Q2 2024.]
• Using spaced repetition systems to see through a piece of mathematics tags.to-read
• high school algebra: properties of algebras: commutativity, associativity, identity, distributivity, etc.
  • symmetries: mirror, reflexive, rotational.
• https://de.wikipedia.org/wiki/Trachtenberg-System
• In mathematics, point-free geometry is a geometry whose primitive ontological notion is region rather than point.