How to write a triangular momentum using a unit function (i.e. inclusion, Heaviside)?

Question

Browsers

I'm guessing like this:

Answer 1

Like this - ｎｏｓｔａｌｇｉｃ
ｌｏｌ
UPD: Seriously, this is not a font, these are UTF-8 characters starting with U+FF41 Click
here www.fileformat.info/info/unicode/char/ff41/index.htm to see the rest characters and copy the ones you want.

Answer 2

Unicode Section Halfwidth and Fullwidth Forms (FF00-FFEF)
https://unicode-table.com/en/blocks/halfwidth-and-...
https://en.wikipedia.org/wiki/Halfwidth_and_fullwi...

In CJK (Chinese, Korean, Japanese), computational, graphic characters are traditionally classified as full-width (in Taiwan and Hong Kong: 全形; in Far Eastern and Japanese: 全角) and half-width (in Taiwan and Hong Kong: 半形; in Far Eastern and Japanese: 半角). Half-width characters take up half the space of a full-width character, hence the name.
In the age of computer texts, characters are usually laid out in a grid, often 80 columns by 24 or 25 lines. Each character is displayed as a small matrix of dots, often about 8 pixels wide. SBCS (single byte character set) are used everywhere to encode characters in Western languages.
For a number of practical and aesthetic reasons, Han characters should be twice as wide as single-byte characters. These "full-width characters" are encoded in dbcs (double byte character set).

Answer 3

For example, like this:
τ/2-|t|*θ(t+τ/2)*θ(τ/2-t)
Let me explain: θ(t+τ/2) *θ(τ/2-t) is there will be a rectangular pulse, symmetrical about zero. It remains to multiply it by minus the modulus and add an offset.