RedExplosiveswiki

RedExplosives
Info:
Joined	January 5, 2016

Costa Rica# My Python Code

List of Contributions

https://en.wikipedia.org/wiki/Sieve_of_Eratosthenes Add a block of python code
https://en.wikipedia.org/wiki/Quantum_mechanics I change a typo, which was "led to its becoming the standard" to "led to it becoming the standard"
https://en.wikipedia.org/wiki/Sigma Added an example of the summation operator
User:RedExplosiveswiki/sandbox

My Python Code

Placeholder

print("This is just a placeholder.")

Remember

Remember is a place I put random stuff that I find interesting in case I forget about it or some thing I would like research more in depth later.

$\sum _{n=0}^{\infty }2^{n}=-1$ .

$5!=1\times 2\times 3\times 4\times 5=120$

$\Pi =3.14159265358979$ I'm working on memorizing 25 digits of π

$\lfloor 1.4\rfloor =1$ The floor and ceiling functions give us the nearest integer up or down.

$\lceil 1.4\rceil =2$ The floor and ceiling functions give us the nearest integer up or down.

21, 4, 0, and −2048 are integers, while 9.75, 5 ¹⁄₂, and √2 are not.

ℕ or N means either { 0, 1, 2, 3, ...} or { 1, 2, 3, ...}.

he choice depends on the area of mathematics being studied; e.g. number theorists prefer the latter; analysts, set theorists and computer scientists prefer the former. To avoid confusion, always check an author's definition of N.

ℤ or ℤ means {..., −3, −2, −1, 0, 1, 2, 3, ...}.

ℤ⁺ or ℤ^> means {1, 2, 3, ...} .

ℤ^* or ℤ^≥ means {0, 1, 2, 3, ...} .

x ≤ y means x is less than or equal to y.

x ≥ y means x is greater than or equal to y.

(The forms <= and >= are generally used in programming languages, where ease of typing and use of ASCII text is preferred.)

${\frac {1}{3}}+{\frac {1}{3}}+{\frac {1}{3}}=1$

Featured Picture / Article Of The Day

Picture of the day

William Howard Taft

Photograph credit: Pach Brothers; restored by Adam Cuerden

Gold dinar minted with al-Musta'li's name

Al-Mustaʿlī biʾllāh (15/16 September 1074 – 1101) was the ninth Fatimid caliph and the nineteenth imam of Musta'li Ismailism. He became caliph through the machinations of his brother-in-law al-Afdal Shahanshah. In response, his oldest brother, Nizar, revolted in Alexandria; his defeat and execution split the Isma'ili movement. Al-Musta'li remained subordinate to al-Afdal, who was the de facto ruler of the Fatimid Caliphate. The Caliphate's territory in Egypt experienced good government and prosperity, but the Fatimids suffered setbacks in Syria, where they faced the advance of the Seljuk Turks. Al-Afdal recovered the port city of Tyre and recaptured Jerusalem in the turmoil caused by the arrival of the First Crusade. Despite Fatimid attempts to make common cause with the Crusaders against the Seljuks, the Crusaders advanced south and captured Jerusalem in July 1099 and defeated the Fatimid army at the Battle of Ascalon. Al-Musta'li died in 1101 and was succeeded by his son al-Amir. (Full article...)

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