Mutation Updated +Created
Tree representation Updated +Created
This section is about ways in which you can represent a tree.
Trees are a specific type of graph, so any graph representation also provides a way to represent a tree.
Therefore this section will focus only on methods specific to tress, and which cannot be used for graphs in general.
Universal Turing machine Updated +Created
A Turing machine that simulates another Turing machine/input pair that has been encoded as a string.
In other words: an emulator!
The concept is fundamental to state several key results in computer science, notably the halting problem.
Wall Street Updated +Created
Zakir Hussain (musician) Updated +Created
Ciro Santilli's skills Updated +Created
Erhu player Updated +Created
Private university Updated +Created
Ravi Shankar Updated +Created
Silicon Valley Updated +Created
British university Updated +Created
Undergraduate education Updated +Created
Greisen-Zatsepin-Kuzmin limit Updated +Created
Mystery film Updated +Created
Song Fei (erhu) Updated +Created
Video 1.
Suwu herding sheep played by Song Fei (2017)
Source.
Xun (instrument) Updated +Created
Video 1.
Song of Chu xun solo
. Source. TODO performer
Bicycle tire sizes Updated +Created
Yes, Sheldon he has separate American and British English versions of pages!!!
For example, Kross bicycle (2017) had a Schwalbe tyre with markings:
42-622 (28 x 1.60, 700x40C)
When inflated, the tires were about 3.5cm wide as measured with a ruler.
And the Mavic A319 rim had markings:
622x19C
In this:
Heat equation Updated +Created
Besides being useful in engineering, it was very important historically from a "development of mathematics point of view", e.g. it was the initial motivation for the Fourier series.
Some interesting properties:

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