Art of Problem Solving
AoPS Online AoPS Online
Math texts, online classes, and more
for students in grades 5-12.
Visit AoPS Online ‚
Books for Grades 5-12 Online Courses
Beast Academy Beast Academy
Engaging math books and online learning
for students ages 6-13.
Visit Beast Academy ‚
Books for Ages 6-13 Beast Academy Online
AoPS Academy AoPS Academy
Small live classes for advanced math
and language arts learners in grades 1-12.
Visit AoPS Academy ‚
Find a Physical Campus Visit the Virtual Campus

Plan ahead for the next school year. Schedule your class today!
Site Support Tech support and questions about AoPS classes and materials
Tech support and questions about AoPS classes and materials
3 M G
BBookmark  VNew Topic kLocked
Site Support Tech support and questions about AoPS classes and materials
Tech support and questions about AoPS classes and materials
3 M G
BBookmark  VNew Topic kLocked
t 
18,753 topics
w
2 users
TOPICS
No tags match your search
M
Alcumus
blogs
LaTeX
search
FTW
geometry
Support
email
MATHCOUNTS
function
AMC
AoPSwiki
Bug
Reaper
Forums
AIME
suggestion
poll
site support
AoPS
AMC 10
Asymptote
AoPS classes
posts
videos
Glitch
pms
calculus
help
Suggestions
probability
classroom
number theory
classes
AMC 8
question
AoPS Books
Forum
glitch or bug
3D geometry
Greed Control
AIME I
USA(J)MO
Tags
Friends
Avatars
Homework
BBCode
upvotes
Post
No tags match your search
M
G
Topic
First Poster
Last Poster
H
k a July Highlights and 2025 AoPS Online Class Information
jwelsh   0
Jul 1, 2025
We are halfway through summer, so be sure to carve out some time to keep your skills sharp and explore challenging topics at AoPS Online and our AoPS Academies (including the Virtual Campus)!

[list][*]Over 60 summer classes are starting at the Virtual Campus on July 7th - check out the math and language arts options for middle through high school levels.
[*]At AoPS Online, we have accelerated sections where you can complete a course in half the time by meeting twice/week instead of once/week, starting on July 8th:
[list][*]MATHCOUNTS/AMC 8 Basics
[*]MATHCOUNTS/AMC 8 Advanced
[*]AMC Problem Series[/list]
[*]Plus, AoPS Online has a special seminar July 14 - 17 that is outside the standard fare: Paradoxes and Infinity
[*]We are expanding our in-person AoPS Academy locations - are you looking for a strong community of problem solvers, exemplary instruction, and math and language arts options? Look to see if we have a location near you and enroll in summer camps or academic year classes today! New locations include campuses in California, Georgia, New York, Illinois, and Oregon and more coming soon![/list]

MOP (Math Olympiad Summer Program) just ended and the IMO (International Mathematical Olympiad) is right around the corner! This year’s IMO will be held in Australia, July 10th - 20th. Congratulations to all the MOP students for reaching this incredible level and best of luck to all selected to represent their countries at this year’s IMO! Did you know that, in the last 10 years, 59 USA International Math Olympiad team members have medaled and have taken over 360 AoPS Online courses. Take advantage of our Worldwide Online Olympiad Training (WOOT) courses
and train with the best! Please note that early bird pricing ends August 19th!
Are you tired of the heat and thinking about Fall? You can plan your Fall schedule now with classes at either AoPS Online, AoPS Academy Virtual Campus, or one of our AoPS Academies around the US.

Our full course list for upcoming classes is below:
All classes start 7:30pm ET/4:30pm PT unless otherwise noted.

Introductory: Grades 5-10

Prealgebra 1 Self-Paced

Prealgebra 1
Wednesday, Jul 16 - Oct 29
Sunday, Aug 17 - Dec 14
Tuesday, Aug 26 - Dec 16
Friday, Sep 5 - Jan 16
Monday, Sep 8 - Jan 12
Tuesday, Sep 16 - Jan 20 (4:30 - 5:45 pm ET/1:30 - 2:45 pm PT)
Sunday, Sep 21 - Jan 25
Thursday, Sep 25 - Jan 29
Wednesday, Oct 22 - Feb 25
Tuesday, Nov 4 - Mar 10
Friday, Dec 12 - Apr 10

Prealgebra 2 Self-Paced

Prealgebra 2
Friday, Jul 25 - Nov 21
Sunday, Aug 17 - Dec 14
Tuesday, Sep 9 - Jan 13
Thursday, Sep 25 - Jan 29
Sunday, Oct 19 - Feb 22
Monday, Oct 27 - Mar 2
Wednesday, Nov 12 - Mar 18

Introduction to Algebra A Self-Paced

Introduction to Algebra A
Tuesday, Jul 15 - Oct 28
Sunday, Aug 17 - Dec 14
Wednesday, Aug 27 - Dec 17
Friday, Sep 5 - Jan 16
Thursday, Sep 11 - Jan 15
Sunday, Sep 28 - Feb 1
Monday, Oct 6 - Feb 9
Tuesday, Oct 21 - Feb 24
Sunday, Nov 9 - Mar 15
Friday, Dec 5 - Apr 3

Introduction to Counting & Probability Self-Paced

Introduction to Counting & Probability
Wednesday, Jul 2 - Sep 17
Sunday, Jul 27 - Oct 19
Monday, Aug 11 - Nov 3
Wednesday, Sep 3 - Nov 19
Sunday, Sep 21 - Dec 14 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Friday, Oct 3 - Jan 16
Sunday, Oct 19 - Jan 25
Tuesday, Nov 4 - Feb 10
Sunday, Dec 7 - Mar 8

Introduction to Number Theory
Tuesday, Jul 15 - Sep 30
Wednesday, Aug 13 - Oct 29
Friday, Sep 12 - Dec 12
Sunday, Oct 26 - Feb 1
Monday, Dec 1 - Mar 2

Introduction to Algebra B Self-Paced

Introduction to Algebra B
Friday, Jul 18 - Nov 14
Thursday, Aug 7 - Nov 20
Monday, Aug 18 - Dec 15
Sunday, Sep 7 - Jan 11
Thursday, Sep 11 - Jan 15
Wednesday, Sep 24 - Jan 28
Sunday, Oct 26 - Mar 1
Tuesday, Nov 4 - Mar 10
Monday, Dec 1 - Mar 30

Introduction to Geometry
Monday, Jul 14 - Jan 19
Wednesday, Aug 13 - Feb 11
Tuesday, Aug 26 - Feb 24
Sunday, Sep 7 - Mar 8
Thursday, Sep 11 - Mar 12
Wednesday, Sep 24 - Mar 25
Sunday, Oct 26 - Apr 26
Monday, Nov 3 - May 4
Friday, Dec 5 - May 29

Paradoxes and Infinity
Mon, Tue, Wed, & Thurs, Jul 14 - Jul 16 (meets every day of the week!)
Sat & Sun, Sep 13 - Sep 14 (1:00 - 4:00 PM PT/4:00 - 7:00 PM ET)

Intermediate: Grades 8-12

Intermediate Algebra
Sunday, Jul 13 - Jan 18
Thursday, Jul 24 - Jan 22
Friday, Aug 8 - Feb 20
Tuesday, Aug 26 - Feb 24
Sunday, Sep 28 - Mar 29
Wednesday, Oct 8 - Mar 8
Sunday, Nov 16 - May 17
Thursday, Dec 11 - Jun 4

Intermediate Counting & Probability
Sunday, Sep 28 - Feb 15
Tuesday, Nov 4 - Mar 24

Intermediate Number Theory
Wednesday, Sep 24 - Dec 17

Precalculus
Wednesday, Aug 6 - Jan 21
Tuesday, Sep 9 - Feb 24
Sunday, Sep 21 - Mar 8
Monday, Oct 20 - Apr 6
Sunday, Dec 14 - May 31

Advanced: Grades 9-12

Calculus
Sunday, Sep 7 - Mar 15
Wednesday, Sep 24 - Apr 1
Friday, Nov 14 - May 22

Contest Preparation: Grades 6-12

MATHCOUNTS/AMC 8 Basics
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)
Sunday, Aug 17 - Nov 9
Wednesday, Sep 3 - Nov 19
Tuesday, Sep 16 - Dec 9
Sunday, Sep 21 - Dec 14 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Monday, Oct 6 - Jan 12
Thursday, Oct 16 - Jan 22
Tues, Thurs & Sun, Dec 9 - Jan 18 (meets three times a week!)

MATHCOUNTS/AMC 8 Advanced
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)
Sunday, Aug 17 - Nov 9
Tuesday, Aug 26 - Nov 11
Thursday, Sep 4 - Nov 20
Friday, Sep 12 - Dec 12
Monday, Sep 15 - Dec 8
Sunday, Oct 5 - Jan 11
Tues, Thurs & Sun, Dec 2 - Jan 11 (meets three times a week!)
Mon, Wed & Fri, Dec 8 - Jan 16 (meets three times a week!)

AMC 10 Problem Series
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)
Sunday, Aug 10 - Nov 2
Thursday, Aug 14 - Oct 30
Tuesday, Aug 19 - Nov 4
Mon & Wed, Sep 15 - Oct 22 (meets twice a week!)
Mon, Wed & Fri, Oct 6 - Nov 3 (meets three times a week!)
Tue, Thurs & Sun, Oct 7 - Nov 2 (meets three times a week!)

AMC 10 Final Fives
Friday, Aug 15 - Sep 12
Sunday, Sep 7 - Sep 28
Tuesday, Sep 9 - Sep 30
Monday, Sep 22 - Oct 13
Sunday, Sep 28 - Oct 19 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Wednesday, Oct 8 - Oct 29
Thursday, Oct 9 - Oct 30

AMC 12 Problem Series
Wednesday, Aug 6 - Oct 22
Sunday, Aug 10 - Nov 2
Monday, Aug 18 - Nov 10
Mon & Wed, Sep 15 - Oct 22 (meets twice a week!)
Tues, Thurs & Sun, Oct 7 - Nov 2 (meets three times a week!)

AMC 12 Final Fives
Thursday, Sep 4 - Sep 25
Sunday, Sep 28 - Oct 19
Tuesday, Oct 7 - Oct 28

AIME Problem Series A
Thursday, Oct 23 - Jan 29

AIME Problem Series B
Tuesday, Sep 2 - Nov 18

F=ma Problem Series
Tuesday, Sep 16 - Dec 9
Friday, Oct 17 - Jan 30

WOOT Programs
Visit the pages linked for full schedule details for each of these programs!

MathWOOT Level 1
MathWOOT Level 2
ChemWOOT
CodeWOOT
PhysicsWOOT


Programming

Introduction to Programming with Python
Thursday, Aug 14 - Oct 30
Sunday, Sep 7 - Nov 23
Tuesday, Dec 2 - Mar 3

Intermediate Programming with Python
Friday, Oct 3 - Jan 16

USACO Bronze Problem Series
Wednesday, Sep 3 - Dec 3
Thursday, Oct 30 - Feb 5
Tuesday, Dec 2 - Mar 3

Physics

Introduction to Physics
Tuesday, Sep 2 - Nov 18
Sunday, Oct 5 - Jan 11
Wednesday, Dec 10 - Mar 11

Physics 1: Mechanics
Sunday, Sep 21 - Mar 22
Sunday, Oct 26 - Apr 26
0 replies
jwelsh
Jul 1, 2025
0 replies
J
H
Processing module python not working
Demetri   15
N 28 minutes ago by Demetri
The following code doesn't work, because canvas isn't implemented for the processing module:
import processing
def setup():
    processing.size(200, 200)
def draw():
    processing.ellipse(100, 100, 50, 50)
    processing.noLoop()
processing.run()

I believe this is an easy fix, someone just forgot to add the line "Sk.canvas = outcanvas;"(or something similar) in the code for the pywindow, which would give an output.
15 replies
Demetri
Jul 1, 2025
Demetri
28 minutes ago
J
H
Wiki lag fixed
asuth_asuth   22
N Yesterday at 11:59 PM by MathPerson12321
Hi friends. Just wanted to share that we've made some upgrades to the Wiki and the lag should be fixed. I know a few of you have posted about that the last few weeks so I'm happy to report it's better now! :) If you run into any other issues like that please let us know.
22 replies
asuth_asuth
Yesterday at 6:40 PM
MathPerson12321
Yesterday at 11:59 PM
J
H
Redirect of old aops links to new links
Kempu33334   0
Yesterday at 10:18 PM
Would it be possible to redirect users from a /Forum/[...] (which are the old aops urls) to the corresponding new link instead of to the 404 page?

It seems that it shouldn't be too difficult, as generally, all that has to be done is:

Old link: https://www.artofproblemsolving.com/Forum/viewtopic.php?f=[X]&t=[Y]&[Z]
New link: https://www.artofproblemsolving.com/community/h[Y].

For example,

https://www.artofproblemsolving.com/Forum/viewtopic.php?f=41&t=46819&hilit=Putnam+1990
https://www.artofproblemsolving.com/community/h46819

so the "Forum" is replaced with "community", the "t=" becomes "h" and the other things go away.
0 replies
Kempu33334
Yesterday at 10:18 PM
0 replies
J
H
Feed of bookmarked users
Suntafayato   2
N Yesterday at 10:09 PM by AlexHome
Given some bookmarked users on AOPS, how can I have a feed view of recent post they made? I want to make a follow list to see their recent activity.
2 replies
Suntafayato
Jun 17, 2025
AlexHome
Yesterday at 10:09 PM
J
No more topics!
H
J
H
k Asymptote error [RESOLVED]
WoodBurnerB   17
N May 6, 2024 by WoodBurnerB
IMAGE
[code]IMAGE[/code]

Shows two dice instead of a line?
17 replies
WoodBurnerB
May 6, 2024
WoodBurnerB
May 6, 2024
J
Asymptote error [RESOLVED]
G H J
Reveal topic tags
Asymptote
L
G H BBookmark kLocked kLocked NReply
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
WoodBurnerB
3139 posts
WoodBurnerB
#1 h  May 6, 2024, 6:52 PM
Y by
[asy] draw((0,0)--(3,0)); [/asy]
[asy]
draw((0,0)--(3,0));
[/asy]


Shows two dice instead of a line?
This post has been edited 1 time. Last edited by WoodBurnerB, May 6, 2024, 8:43 PM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
WoodBurnerB
3139 posts
WoodBurnerB
#2 h  May 6, 2024, 6:54 PM
Y by
I'm so confused. Am I doing something wrong?
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
club52
726 posts
club52
#3 h  May 6, 2024, 6:58 PM
Y by
This error has happened many times before in AoPS history. Every few months, there is some glitch in the AoPS system where it renders many things incorrectly. For example, several months ago there was this diagram that rendered with a lot of extra colors and the word "thingy." I don't believe you are doing anything wrong, its just that there was too much Asymptote on the site that it crashed.
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Elephant200
1472 posts
Elephant200
#4 h  May 6, 2024, 6:58 PM
Y by
[asy] draw((0,0)--(3,0)); [/asy]

Cannot reproduce
This post has been edited 2 times. Last edited by Elephant200, May 6, 2024, 6:59 PM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
club52
726 posts
club52
#5 h  May 6, 2024, 6:59 PM
Y by
Drawing from 0,0 to 1,0 produces this.

[asy] draw((0,0)--(1,0)); [/asy]
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Leuy452
280 posts
Leuy452
#6 h  May 6, 2024, 7:00 PM
Y by
Post #5 by club52
Wait what how does that happen?
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
club52
726 posts
club52
#7 h  May 6, 2024, 7:00 PM
Y by
Circle with radius 1 produces this.
[asy] draw(unitcircle); [/asy]
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
club52
726 posts
club52
#8 h  May 6, 2024, 7:03 PM • 1 Y
Y by Leuy452
Leuy452 wrote:
Post #5 by club52
Wait what how does that happen?

I have no idea why. I just think that the site crashed or something. This has happened before.
A square:
[asy] draw(unitsquare); [/asy]
A triangle.
[asy] draw(polygon(3)); [/asy]
A pentagon.
[asy] draw(polygon(5)); [/asy]
Whenever an asymptote crash has happened before it is usually fixed in a few days.
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
MathPerson12321
3820 posts
MathPerson12321
#9 h  May 6, 2024, 7:52 PM
Y by
[asy] draw((0,0)--(3,0)); draw(unitsquare); [/asy]

cant reproduce
@bove the pentagon is normal but labels?
This post has been edited 2 times. Last edited by MathPerson12321, May 6, 2024, 7:54 PM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
WoodBurnerB
3139 posts
WoodBurnerB
#11 h  May 6, 2024, 7:57 PM
Y by
Will this get fixed?
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
LostInBali
1959 posts
LostInBali
#12 h  May 6, 2024, 8:12 PM
Y by
WoodBurnerB wrote:
[asy] draw((0,0)--(3,0)); [/asy]
[asy]
draw((0,0)--(3,0));
[/asy]


Shows two dice instead of a line?

Huh, now it renders properly
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
WoodBurnerB
3139 posts
WoodBurnerB
#14 h  May 6, 2024, 8:35 PM
Y by
[asy] draw((0,0)--(3,0)); [/asy]

Weird
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
WoodBurnerB
3139 posts
WoodBurnerB
#15 h  May 6, 2024, 8:35 PM
Y by
I guess it's fixed
\req lock
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
lekkal1
768 posts
lekkal1
#17 h  May 6, 2024, 8:40 PM • 2 Y
Y by WoodBurnerB, Elephant200
Don’t say /req lock because the mods don’t look at every single post. Instead say RESOLVED next to the title so it is easier for the mods to find and lock.
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
JasNS
158 posts
JasNS
#18 h  May 6, 2024, 9:27 PM
Y by
[asy] draw((0,0)--(1,0)); [/asy]

Wait thats so weird how does

draw((0,0)--(1,0));
Produce what happened above
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
WoodBurnerB
3139 posts
WoodBurnerB
#19 h  May 6, 2024, 9:34 PM
Y by
club52 wrote:
This error has happened many times before in AoPS history. Every few months, there is some glitch in the AoPS system where it renders many things incorrectly. For example, several months ago there was this diagram that rendered with a lot of extra colors and the word "thingy." I don't believe you are doing anything wrong, its just that there was too much Asymptote on the site that it crashed.
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
bpan2021
2722 posts
bpan2021
#20 h  May 6, 2024, 9:44 PM • 1 Y
Y by Demetri
If you ever happen to be in this situation, there is a simple workaround.
Add // to the end of the code, followed by any string of letters. This prompts the Asymptote to rerender the code, so the old, corrupted cache file is not there to view anymore.
As an example, this code is rendered correctly.
This post has been edited 1 time. Last edited by bpan2021, May 6, 2024, 9:44 PM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
WoodBurnerB
3139 posts
WoodBurnerB
#21 h  May 6, 2024, 9:53 PM
Y by
Thank you!
Z Y
G
H
=
a