Tumgik
#integers
positivelyprime · 7 months
Text
Eisenstein primes (and integers)
You've heard of integer primes, but have you heard of different kind of primes? One of the most beautiful pictures in mathematics I've recently seen is this:
Tumblr media
This is a picture displaying the Eisenstein primes and the rest of the post will be me explaining where this comes from.
Firstly, to understand what Eisenstein primes are, we need to know what Eisenstein integers are! An Eisenstein integer is a complex number of the form z = a + b w where a,b are integers and w = e^(2/3 pi i). Normally a small letter omega is used instead of w. Notice that w is a third root of unity, i.e. w³ = 1.
Appending this complex w to the regular integers has some consequences. In particular, we can now view the eligible numbers on the complex plane to get this picture:
Tumblr media
The Eisenstein integers correspond exactly to places where two dotted lines cross. As such, where normally one can view integers as laying on a 1-d line, we can now view Eisenstein integers as laying on a 2-d lattice!
Now one may start to wonder if, just like in the integers, one can have Eisenstein integers which are not divisible by other Eisenstein integers. In more mathematics: We call a number p an Eisenstein prime if p cannot be written as a*b where a,b are Eisenstein numbers which are not +-1, +-w, +-w² (the units in this system).
It turns out that some regular primes are still primes in the Eisenstein integers. For example, 2 can still not be decomposed. However, 3 can! We may write 3 = -(1+2w)(1+2w) which means that 3 is not an Eisenstein prime. One may investigate this further (using abstract algebra) to arrive at the picture at the top of this post. The 6-fold rotational symmetry is due to the Eisenstein integers having 6 units.
Of course a natural question is why take a third root of unity and not an nth root? This is a very interesting question and leads to the study of (integer rings of) cyclotomic fields! This concludes fun math fact tuesday
212 notes · View notes
secondwheel · 8 months
Photo
Tumblr media
The  |  stands for the absolute value of an integer. In this case, it makes anything positive. 
101 notes · View notes
xxyv3 · 1 month
Text
quick pi doodle, i forgkt to put my signatur on my last art
Tumblr media
46 notes · View notes
sleekwind · 9 months
Text
What I don't understand is when math teacher says -1 is the largest negative integer. What about -0.1? Or -0.000534? Are they not right side enough in the integer scale for them to be large? If there is a math side of Tumblr pls explain
140 notes · View notes
zwoelffarben · 7 months
Text
18 notes · View notes
planeswalker-umbral · 8 months
Text
Oh you think healers can't get kills?
*heals you 2147483648 health*
10 notes · View notes
Text
Integers like their personal space. Real numbers are clingy huggers. Rational numbers look like they're super touchy-feely but they're actually just standing really close together.
44 notes · View notes
brightgreendandelions · 9 months
Text
by "how many digits" i, of course, mean log base ten! that's why 0 and 1 are separate options :)
10 notes · View notes
mumblelard · 2 years
Text
Tumblr media
the shirt for my new hiking club has finally arrived
24 notes · View notes
lesbianslovebts · 2 years
Text
I was thinking about partitions of integers and playing around with Ferrers diagrams for 1 through 7 tonight. So, I drew them all out vertically and paired the symmetrical shapes (see the margins of the page). Then, I redrew them so the symmetry was more easily visible (middle of the page). I moved them around some more so that there weren't any spaces between each partition diagram and nested them all together like matryoshka dolls (bottom right). I thought that looked cool but wanted to get rid of the extra space, so I pushed it all together. Lastly, I figured I would reflect the whole thing across y = x to get a nice square. The final design is the second photo!
Tumblr media Tumblr media
5 notes · View notes
thesilliestgeese · 14 days
Text
the sexual tension between relatively prime numbers is unbearable
0 notes
legoobsessionist · 4 months
Text
Courtesy of my new year's party: every integer 1-104 ranked by sexiness
Tumblr media
1 note · View note
digitalartform · 8 months
Text
0 notes
dharmendrajadav0208 · 10 months
Text
integers || Introduction | definition of integers
Std 7 maths chap 1 integers
For primary students
youtube
0 notes
my-experience-2023 · 11 months
Text
Learning integers, natural and expressive
Tumblr media
One of the most important topics in mathematics during education is integers, natural and expressive numbers. Although this subject in mathematics is very important, it seems that students have a little difficulty in learning this subject. In order for students to be able to learn the subject of integers, natural and rational numbers well, it is necessary to adopt the correct teaching method. If you visit the site address that we put on this page, you will find out everything you need to know about learning this topic.
0 notes
Text
Class-9 CBSE -NCERT Solution Polynomials | Q4 #mathematics #narendrasir
0 notes