Littlewood Polynomials are Polynomials All Of Whose Coefficients Are Either +1 Or −1 (so Even 0 Is

Littlewood Polynomials are Polynomials All Of Whose Coefficients Are Either +1 Or −1 (so Even 0 Is

Littlewood polynomials are polynomials all of whose coefficients are either +1 or −1 (so even 0 is not allowed). If you take all Littlewood polynomials up to a certain degree, calculate all their (complex) roots, and plot those roots in the complex plane, then you get a beautiful fractal-like structure above.

The image is slightly misleading, because the “holes” on the unit circle tend to completely fill in if the degree goes up. Intuitively, the holes mean that complex numbers on the unit circle that are close to low-degree roots of unity are hard to approximate by low-degree Littlewood polynomials (unless they already are roots of unity).

In particular the structure at the edge of the ring is deeply interesting. Notice the familiarity with the dragon curve?

More Posts from Chaos3612 and Others

6 years ago
30/5/18 | Really Don’t Like Further Maths But Hey At Least It Looks Nice
30/5/18 | Really Don’t Like Further Maths But Hey At Least It Looks Nice
30/5/18 | Really Don’t Like Further Maths But Hey At Least It Looks Nice

30/5/18 | really don’t like further maths but hey at least it looks nice

{studygram}


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6 years ago

This! I'm in love.

Just wait until anti-vaxxers learn about bijections.


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5 years ago
chaos3612 - Chaotic Dynamics
chaos3612 - Chaotic Dynamics
chaos3612 - Chaotic Dynamics
chaos3612 - Chaotic Dynamics
chaos3612 - Chaotic Dynamics
chaos3612 - Chaotic Dynamics
chaos3612 - Chaotic Dynamics
chaos3612 - Chaotic Dynamics

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6 years ago
The Fab Five Travel Through Time, Space, And Genre To Help Professor Flitwick Get His Groove Back
The Fab Five Travel Through Time, Space, And Genre To Help Professor Flitwick Get His Groove Back
The Fab Five Travel Through Time, Space, And Genre To Help Professor Flitwick Get His Groove Back
The Fab Five Travel Through Time, Space, And Genre To Help Professor Flitwick Get His Groove Back
The Fab Five Travel Through Time, Space, And Genre To Help Professor Flitwick Get His Groove Back
The Fab Five Travel Through Time, Space, And Genre To Help Professor Flitwick Get His Groove Back
The Fab Five Travel Through Time, Space, And Genre To Help Professor Flitwick Get His Groove Back
The Fab Five Travel Through Time, Space, And Genre To Help Professor Flitwick Get His Groove Back
The Fab Five Travel Through Time, Space, And Genre To Help Professor Flitwick Get His Groove Back

The Fab Five travel through time, space, and genre to help Professor Flitwick get his groove back

6 years ago

for all of you guys getting anxious about the environment and pollution

y’all deserve to hear the good news too, and yes i fact checked these.

7 miles of habitat for bees will be planted in london

the biggest coal plant in north america has been converted to solar panels

roads in edinburgh will close once a month to help pollution

maine has banned styrofoam

new york city and los angeles have both made “green new deals”

The london marathon replaced 200,000 single use water bottles with seaweed water pods

the bees in notre dame survived the fire, and the roof could possibly built in a more eco-friendly way.

the population of flightless kakapos (a cool bird) is rising

the carbon emissions in the uk are the lowest they’ve been since 1998

Another large bee habitat (.5 mil acres) has been created

there is a robot that delivers young coral to help repopulate the great barrier reef

portugal plans to stop using plastic on fruit, vegetables, and bread by 2020

106 new species of bees have been discovered in australia since 2010

a group of Sikhs plan to plant 1,000,000 trees as a gift to the earth

disney has made a mickey-shaped solar farm

Morgan freeman turned a 124 acre ranch in mississippi to a bee habitat

China plans on making a “forest city” to help clean up their air

An increasing amount of countries and states are beginning to ban single use plastics.

A couple replanted a whole forest in brazil (2.7 mil trees) in 20 years, and the animals have come back to live there

The hole in the ozone layer is repairing itself more each year

China plans on spending 360 billion dollars to improve renewable energy and has scrapped plans for coal powered plants that were going to be built.

A national park has been built in the amazon (3.3 mil acres in peru) to preserve the rainforest

Ireland and the uk have declared a climate emergency

The guy who played aquaman (jason momoa) has spent 31,000 dollars to help clean up plastic

South korea is now recycling 95% of food waste

There is a cleanup campaign being planned for mt. everest

Puerto rico wants to use all renewable energy by 2050 and is setting official goals for that

Some schools have special water bottle fill-up stations that encourage you to use refill and reuse plastic bottles rather than throwing them out after one use, these are becoming more common.

9 endangered species are thought to make a comeback this year

20 countries in africa are planning to make a “green wall” of trees and plants that will span the width of africa to stop desertification

recently, a lot of volunteers and organizations are planting a ton of trees.

Awareness about the environment and climate change is growing super fast right now among people and countries, which will only help us

Most pollution is caused by like 100 companies, but a few of those (like pepsi) are trying to cut down on that.

if this stuff keeps happening things will get even better, and the only thing stopping us really are those big companies who don’t want to pay the money to switch to more eco-friendly energy sources. i know the media tends to cause fear and stress about this stuff for a lot of people, but there really is hope.

easy things we can do: 

Recycle 

Plant gardens in your yard for bees if you can

Participate in community volunteer things that plant trees and gardens

Theres this search engine called ecosia that plants a tree for every 45 searches you make, it has almost 2 mil users. 

Pick up trash if you see it when you’re at the beach or in nature

If you have a fair amount of money, consider donating some to trustworthy environmental organizations

Start using a reusable water bottle (like those ones at target) rather than relying on single use plastic ones.

Cut the plastic rings on plastic milk bottles. You know, the little spiky plastic ring near the cap. Birds get those things stuck around their neck and die, so cut them so that they can’t get stuck on a neck.

If you can afford it, get some of those reusable grocery bags and sue those. most grocery stores have them, and it saves a lot of waste.

6 years ago

True. But at the same time I've been struggling with this concepts when it comes to friends.

I have the tendency to put a lot of effort into my friendships even when I receive nothing in exchange. I found the line between being a good friend and being taken advantage impossible to see.

Maybe I just have to learn to work for my applause?

chaos3612 - Chaotic Dynamics

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6 years ago

“Do you want to talk about it or be distracted from it” is honestly the best thing you can say to me when I say im sad/in pain etc.

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chaos3612 - Chaotic Dynamics
Chaotic Dynamics

Small and angry.PhD student. Mathematics. Slow person. Side blog, follow with @talrg.

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