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Math

Gil Strang's course 18.065

  • Linear Algebra (Matrix Math)
  • Statistics and Probability
  • Optimization (Calculus)
  • Deep Learning (Neural Network)

project-based. no tests. “that's how people learn”

Notes on Gilbert Strang Deep Learning

Timeline

  • 2000 BC, Babylon, algebra in use
  • 10th century BCE, in China, ancient texts describe the use of _arrays_ to solve simultaneous equations, including the concept of determinants.
  • 6th century BCE, in Greece, Pythagoras…
  • 4th century BCE, in India, the Hindu numerals 1-9 and 0 are in use.
  • 3rd century BCE, in Greece, Euclid and Archimedes…
  • 300 BC, School of Athens, classical Greece, Euclid, Geometry, shapes, circles, triangles
  • 300 BC, Greece, diaphantus
  • 5th century CE, in India, first use of decimal places.
  • 600 AD, India, Brahmagupta
  • 780-850 CE, in Bahgdad, the Hindu numerals spread to the Islamic world thanks to Persian mathematician al-Khwarizmi, who also coins the word _al-jabr_, or in english, _algebra_.
  • 1250 CE, in Europe, the Hindu numerals and decimal system arrived in the works of al-Khwarizmi, brought back from the holy lands by the crusaders, replacing the Greek and Roman numeral systems.
  • 1545-1850 CE, in Europe and Japan, _array_ methods arrive from China, and the word _matrix_ is coined to replace the word _array_.
  • 1600 Decartes, 32 youngers than Galileo , Cartesian Coordinate System connection between algebra and geometry
  • 1600 galileo
  • 1700 Isaac Newton, Gottfried Leibnez, Euler, another guy, in Europe, invented calculus among other things.
  • Niels bohr, goes beyond Newton in subparticle and interplanetary physics.
  • Hermann Minkowski 4d space time 1908
  • Pythagoras Euclid Archimedes
  • Classical Hellenic Hellenistic
  • Copernicus

Miscellaneous Topics

Euler's Number
Euler's Formula
Power Function
Exponentiation
Exponential Function

Notes

[W,s,v] = svd((repmat(sum(x.*x,1),size(x,1),1).*x)*x');

in week 1 > parameter learning > gradient descent for linear regression

batch gradient descent

use lsode to solve multiple equations using calculus

https://www.gnu.org/software/octave/doc/v4.0.1/Ordinary-Differential-Equations.html

References

Unicode Characters Used in Equations
math.txt · Last modified: 2024/02/08 05:22 by jhagstrand

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