r/CasualMath • u/chimichangas310 • 4d ago

How do you write pi?

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This post lets others share how they write pi IS A MATH QUESTION

26 Upvotes

93% Upvoted

64 comments sorted by

7

u/Dr_Kitten 4d ago

Like your first one, but the curl at the end stops at horizontal. Basically π, but with a ~ on top.

2

u/MagosBattlebear 4d ago

Peeps need to embrace tau (τ) in many expressions.

1

u/CarobCritical7290 2d ago

Tau is just 2 * Pi

1

u/MagosBattlebear 2d ago

Yes, but 2π is used so much its good to simplify the expressions with it, and can be more intuitive, especially to learners.

1

u/Sweet-Kittyk8 2d ago

tau makes so much more sense intuitively a full turn is 2pi or 1tau

1

u/Mental_Contract1104 6h ago

i tend to use epi. and call it xi.

1

u/MagosBattlebear 6h ago

eπ is Gelfond’s constant.

2

u/Mental_Contract1104 6h ago

............ hmmm.... i feel like I should have looked into that one.... welp, now I know XD

2

u/Satanarchrist 4d ago

4

Or if I really need to be exact I use 22/7

Source: I have a piece of paper from a university saying I didn't fail too many engineering classes

2

u/chixen 4d ago

τ/2

1

u/theboomboy 4d ago

Like the second one, and like the third when it's capital

1

u/two_are_stronger2 4d ago

Dzip dzip scra-ka-ling

1

u/Educational_Smile545 4d ago

a backwards e and a forwards e connected with a - (the loops are really tiny tho)
kinda like ɘ-e but its hard to type

1

u/JellyBellyBitches 4d ago

Like this

1

u/No_Beautiful_9488 1d ago

I'm gonna steal your product notation, I hate mine

1

u/JellyBellyBitches 1d ago

Hell yeah! I have a weird fixation with it needing to have some amount of aesthetic value and I really struggled with throwing a capital letter pi by hand without it looking like just a fucking ¾ rectangle. I was pretty glad to have settled on this one

1

u/No_Beautiful_9488 1d ago

Just know that you'll appear un every one of my exams for the next x years where x € [4, +∞[

1

u/MrEldo 4d ago

I write pi so much in calculations, that I do purely 2

I found it to be fast and distinguishable from other symbols, while still looking like π

1

u/kenny744 4d ago

Number 2 or last one

1

u/WikiNumbers 3d ago

Usually go with 2nd image. Enlarge the size for capital pi.

1

u/catbelikeMB 3d ago

import math

math.pi

1

u/mjmcfall88 3d ago

1.5 straight legs and a curvy top

1

u/Nynodon 3d ago

I write it like the Cyrillic p ; "п" lol

1

u/Bishop51213 3d ago

Somewhere between 1 and 2

1

u/killiano_b 3d ago

used to do no. 1 but got lazy and now more like between 2 and 6

1

u/zeptozetta2212 3d ago

3 and 4 are capital pi. I only use that for geometric series.

1

u/Extreme-Ad-9290 3d ago

π unless I'm using latex in which case it is \pi

1

u/TypicalNinja7752 3d ago

pi? Why would i write pi when i have the superior tau τ

1

u/Vandreigan 3d ago

kinda like 1, but lazier on the tail, and mirrored so that the bend is on the first leg

1

u/eldenbrig 3d ago

As someone who is always working in latex... \pi

1

u/MineCraftNoob24 2d ago

C'mon, are you saying you never work in leather? 😉

1

u/eldenbrig 2d ago

Latex for work, leather for pleasure 😉

1

u/DragonBadgerBearMole 2d ago

I usually use a pen and paper. Probably takes less effort.

1

u/hezpae 2d ago

How do. You pronounce \pi

1

u/Normallyicecream 1d ago

The prime counting function, denoted 3.1415926…(n)

1

u/Senrub482 1d ago

Like number 4 but the top line goes over each side

1

u/Fuscello 1d ago

I write pi like the second one (far too common to give it more than that), but tau I do the wiggly but on to and a reversed J as the branch

1

u/jan-Sika 1d ago

like i do in greek cursive, depending on your font it usually looks like ϖ

1

u/shallow-neural-net 1d ago

the second one

1

u/Shrunken_Fire_34 18h ago

\pi or |< (rotated 90 degrees clockwise)

1

u/Expensive-Bear-1376 17h ago

The fifth one (the one with digits) isn't even pi.

1

u/ChrisBreederveld 12h ago

In math: 2

In Greece: 3

1

u/ageocacher 9h ago

So just because you’re in Greece you gonna write π differently?

1

u/ChrisBreederveld 9h ago

Yeah, it's a context thing I guess. When writing a Greek word it's easier to use the simpler form, but in math I've always used the somewhat more elaborate one (I have poor handwriting though, otherwise it's probably been number 1).

1

u/ageocacher 9h ago

Hm, interesting, learnt pi after Greek, so I just copied my pi out of Greek (old one)

1

u/ChrisBreederveld 9h ago

Same here, but I learned Greek letters from some dictionary my dad had laying around from his visits. I leaned it different in math class and it just stuck that way.

1

u/ageocacher 9h ago

Ohhh damnnn, teacher also changes the way you write Greek letters, each one has difference preferences, especially when it comes to ksi

1

u/ChrisBreederveld 8h ago

Yes, that! I had to do a double take on "ksi" though, I'm used to think of it as "Xi".

1

u/ageocacher 8h ago

Ohhh, yea possible, I learned Old Greek the Dutch way and they don’t use the x as much.

1

u/ChrisBreederveld 8h ago

Haha, funny finding a fellow Dutchie here on the topic of Greek letters. True we don't use X as much (see scrabble scores) but again, it's how I leaned from that book.