Posts Tagged ‘b610’

How Four Powerful Rulers Decided the Fate of a Continent – The New York Times

September 3, 2024

https://www.nytimes.com/2017/05/05/books/review/four-princes-henry-viii-francis-i-charles-v-suleiman-john-julius-norwich.html

HarvardX: CS50’s Introduction to Programming with Python | edX

August 17, 2024

https://www.edx.org/learn/python/harvard-university-cs50-s-introduction-to-programming-with-python

Understanding Relative Humidity and Dew Point | Renesas

March 3, 2024

https://www.renesas.com/us/en/blogs/understanding-relative-humidity-and-dew-point

Desmos | Graphing Calculator

February 26, 2024

https://www.desmos.com/calculator

Euler’s totient function (video) | Khan Academy

January 28, 2024

https://www.khanacademy.org/computing/computer-science/cryptography/modern-crypt/v/euler-s-totient-function-phi-function
Also, Euler phi function

Euler’s Totient Function and Euler’s Theorem

January 28, 2024

https://www.doc.ic.ac.uk/~mrh/330tutor/ch05s02.html

A generalization of Fermat’s little theorem: International Journal of Mathematical Education in Science and Technology: Vol 31, No 3

January 24, 2024

https://www.tandfonline.com/doi/abs/10.1080/00207390050032351#:~:text=Euler%20generalized%20Fermat’s%20Theorem%20in,modn)is%20not%20always%20valid.

Euler generalized Fermat’s Theorem in the following way: if gcd (x,n) = 1 then xφ(n) ≡ 1(modn), where φ is the Euler phi-function. It is clear that Euler’s result cannot be extended to all integers x in the same way Fermat’s Theorem can; that is, the congruence xφ(n)+1 ≡ x(modn)is not always valid.

3.8 The Euler Phi Function

January 24, 2024

https://www.whitman.edu/mathematics/higher_math_online/section03.08.html

If 𝑝� is a prime and 𝑎� is a positive integer, then
𝜙(𝑝^𝑎)=𝑝^𝑎−𝑝^(𝑎−1)

What is 25 mod 2? (25 modulo 2?)

January 13, 2024

https://divisible.info/Modulo/What-is-25-mod-2.html

The Caesar cipher (video) | Cryptography | Khan Academy

January 13, 2024

https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/caesar-cipher#:~:text=The%20Caesar%20Cipher%2C%20used%20by,exploits%20patterns%20in%20letter%20frequencies.