Who is this kid?

by Mrdavid445, Sep 11, 2011, 12:39 AM

Who is this djmathman kid?

Blog is about math, gmail is about USAMTS, FACEBOOK IS ABOUT MATH.

*cough* nerd

:)

Comment

7 Comments

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What? Math is good.

by sjaelee, Sep 11, 2011, 12:41 AM

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I never said it wasn't. I'm just saying this kid is obsessed with it.

by Mrdavid445, Sep 11, 2011, 12:45 AM

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Yea, I'm obsessed. AND I'M PROUD OF IT. :P

It's not the only thing I do, but I really, really like math and I'm not ashamed to say it.

by djmathman, Sep 11, 2011, 12:50 AM

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His name is David. We're friends, and we've video chatted, but never met IRL.

by mcqueen, Sep 11, 2011, 4:40 PM

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Erm... $\asdfasdfasdf$

by anonymous0, Sep 12, 2011, 12:54 AM

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Who ever said we were friends? :wink:

by Mrdavid445, Sep 13, 2011, 11:33 PM

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Isn't this kind of rude...?

by CastleCrasher6, Sep 16, 2011, 7:32 PM

A blog documenting a (no longer) high school youth and his struggles with advancing his mathematical skill.

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djmathman
Archives
- April 2025
It's been a while
+ November 2024
2024 AMC Proposals
+ August 2024
Proof of AM-GM by Induction
+ July 2024
It's been a while since I've posted math on here
+ April 2024
I wrote a CMIMC problem this year
+ February 2024
Geometric Proof of Heron's Formula
+ November 2023
2023 AMC Proposals
+ October 2023
A Generalization of the Bernoulli Inequality
+ April 2023
Zeros of Rational Function
+ March 2023
An Inequality with Harmonic Numbers
+ February 2023
2023 AIME Proposals
+ January 2023
Taiji is a good puzzle game
+ December 2022
I haven't posted puzzles on here in a while
+ November 2022
2022 AMC Proposals
+ July 2022
A Short Existence Proof of the Polar
+ February 2022
2022 AMC and AIME proposals
+ January 2022
... but I do puzzles more
+ December 2021
I still do math, I think
Here are two Kakuro puzzles
+ November 2021
Apparently there's not a math contest tomorrow or something
Apparently there's a math contest tomorrow or something
+ September 2021
A bit of a late entry
Just when I think I've moved on
More Puzzles
+ June 2021
Collection of Puzzles
+ May 2021
Hi here's a Yajilin
The Semi-Annual Problem Dump
Random Blog Post with No Context
+ April 2021
Hi here's a Nurikabe
+ March 2021
2021 AIME II Proposal
2021 AIME I Proposals
CMIMC 2021
+ February 2021
Ten Years
2021 AMC B Proposals
2021 AMC A Proposals
A Very Amusing Quote
It's That Time of Year Again
+ January 2021
Dedicated Puzzle Blog
Hey i forgot a few puzzles
NICE contest
+ December 2020
Putnam Marathon
Four Factorial
Small Boy Kakuro
I should find a better place to put these puzzles at some point
+ November 2020
Some Puzzles of Mine
+ October 2020
TJ Black Book of Problem Solving
+ September 2020
It's kind of a miracle
Probability of Choosing Increasing Sequence
An Amazing Geometry Problem
+ August 2020
3Blue1Brown Easter Egg
I now have the distinct honor
I'm into puzzle writing now!
I have a Discord now
+ July 2020
More Fun Sudoku!
+ June 2020
Math Jams Continued
Math Jam Reveal
Killer Sudoku
Moderation
The Miracle Sudoku
AOIME 2020 Proposal
+ May 2020
AwesomeMath Online
A Random Isogonal Conjugate Thing
MATHCOUNTS
This Semester is Over
Running a Math Contest is Nerve-Wracking
A Barrage of Problems from the Past Few Months
+ April 2020
An Amusing Statistic Pointed out to Me
Hollow Knight is very difficult
+ March 2020
David's Problem Stash Revenge Round?
An Update
Some Soothing Music
Running a Math Jam is Intense
2020 AIME I Proposals
Good Luck
The Discussion about Cutoffs in the Contests and Programs Forum
+ February 2020
Proctoring the AMCs felt Weird
2020 CMIMC (Proposals)
+ January 2020
2020 AMC A Proposals
Tomorrow is a travel day
+ December 2019
An Integral
Twenty-Three
+ October 2019
I'm still alive
+ July 2019
IMO 2019
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College Graduation
+ April 2019
Graduate Schools
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2019 AMC/AIME Proposals
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Putnam 2018
+ January 2019
It wouldn't be the end of January
+ December 2018
Twenty Two
Correcting a Previous Blog Post
Putnam 2018
+ November 2018
Two Nice Berkeley Problems
+ October 2018
Post in October
+ September 2018
Revenge on an Old Number Theory
+ August 2018
A Few Problems
I have now surpased
+ July 2018
Contrib Experiment
Summer Updates
I just realized that previous post was in May
+ May 2018
2020 Problem Proposals
Life Update
Pizza Ordering Protip
+ April 2018
2018 ARML Local Proposals
I'm a moderator who's afraid of drama
+ March 2018
2018 Summer Plans
2018 AIME II Proposals
A Few USAMO #5s
2018 AIME I Proposals
+ February 2018
Celeste Verdict
Putnam Results 2017
2018 AMC B Proposals
HMMT Reflection
HMMT 2018
2018 AMC A Proposals
+ January 2018
Final Update on "Future American Mathematics Competitions"
CMIMC is in a week
A Nice Mandelbrot Problem
Some Combinatorics
+ December 2017
Twenty One
A Nice Trig Summation
Putnam Synopsis
+ November 2017
Putnam Rush
+ October 2017
October Updates
+ September 2017
Miscellaneous Updates
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Update on AMC/AIME 2018
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AMSP Cornell 2
Mission Accomplished
+ June 2017
AMSP Dallas Update
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More Serious Blog
Geo 3 Prep
Summer Update
Sophomore year
Analysis is Fun
AMSP Update
+ April 2017
A few Jumbled Thoughts on Problem Writing
Well rip
Fakesolving problems
Putnam Update III
Putnam Update II
Putnam Update
+ March 2017
NIMO April Contest
A (Probably) New Proof of the Pythagorean Theorem
Miscellaneous Problems
I am Finally Free
+ February 2017
AwesomeMath 2017
It's been six years
Two-Factor Authentication
AMC-Related Thought
Combo and some Music
+ January 2017
A Few Personal Favorites from CMIMC (Part II)
CMIMC 2017 Summary
An Unsettling Quote
Fourth Semester
Faculty Course Evaluations
+ December 2016
A Startling Realization
Holidays and Stuff
Analysis Final Summary
Hutchinson's Theorem (a.k.a. how to draw pretty pictures)
My Ctrl keys have stopped working
Putnam Aftermath
Last-minute Algebra studying
+ November 2016
The day has finally come
I now have a Steam
CMU Math Jam
A Very Cool Analysis Fact
+ October 2016
Analysis Struggles
NIMO Contest 28
An Interesting Number Theory
Induction
Mathematica Part II
Mathematica
Algebra Struggles Part III
+ September 2016
Algebra Struggles Part II
Algebra Struggles
Various Putnam Seminar Problems
High School Math Club Handouts
Western Pennsylvania ARML Advertising
+ August 2016
Sophomore Year
AoPS Precalc is hard
I have a website!
Super Mario Galaxy
A Few Problems
Puget Update 6
Puget Update 5
Puget Update 4
+ July 2016
Puget Update 3
Puget Update 2
Puget Update 1
AMSP 2016 Puget Sound
IMO 2016
AMC Packet
+ June 2016
CMIMC 2016 Results and AMSP 2016 Cornell
Time to brush up on my NT
All my high school teachers
I can't believe I'm saying this
Creation of Private Blog
NIMO Favorite Problems (Again)
In Response to "That Moment When"
+ May 2016
2018 AMC/AIME Problem Proposals
The Man who Knew Infinity
After College
Freshman Year
Calculus and Combinatorics
Finals 2016
+ April 2016
An Update on "Conversations are Hard"
Proving FTC2 (aka an introduction to integration theory)
Conversations are Hard
AND SO IT BEGINS
USA(J)MO 2016
College Math Meets Euclidean Geometry
I finally learned how to play Tractor
A Few Personal Favorites from CMIMC
Putnam 2015 Results
CMIMC 2016 is Over!
+ March 2016
G10 Steamroller
CMIMC is a Week Away??
NIMO April Contest!
Expected Unexpected Visits
Using College to Decipher a MATHCOUNTS Classic
Feelings Revisited Revisited
Feelings Revisited
+ February 2016
Chasing *Blank*
Five Years
An Update on "Future USA Math Competitions"
Accurate Quotes are Accurate
+ January 2016
2016 AMC 10A/12A
A Quick Survey on Math Contests
A Short Proof of a Famous Identity
I downloaded Hearthstone
That Moment When
In Response to "Biology Troubles"
NIMO 23 Reaction
+ December 2015
Algebraic Combinatorics
AwesomeMath 2016
Some Updates on Life
Biology Troubles
NIMO Revenge 22
The Stanford Marshmellow Prison Experiement
Some More Putnam
Putnam in 4 days
+ November 2015
T-2 days
CMIMC 2016 has Arrived!
My Life has been a Lie
+ October 2015
NIMO Revenge 22 Submissions Open!
PUMaC 2015
NIMO Contest 21
Number Theoretic Functions are Fun(ctions)
+ September 2015
Unexpected Translations
Future USA Math Competitions
Using Computer Science to do Math
A Revival of Mirroslav Geo 2 Topics!
A few Putnam Seminar Problems
+ August 2015
College / Looking Back
NIMO Staff for 2015-2016!
NIMO Favorite Problems
Geometry Dash
+ July 2015
A Psychological Math Contest Question
AMA's are hard
AMA Tonight!
Number Theory is hard
A Very Funny Calculus Problem
Chase Angles, not Girls
AMSP Cornell 2015
Euler's Love Story
A Summary of Cornell 2015 Team Contest
+ June 2015
AMSP Cornell 2015 and some Geo
High School Graduation
ARML 2015
+ May 2015
USAMyes??
NIMO Contest 19
Simon's Favorite Factoring Trick (SFFT)
USAMno (darn 8char)
+ April 2015
College Stuff
Concentric Circles
A (Maybe) Quick Favor
A Dabble of Olympiad Geometry
+ March 2015
NIMO Reminder and an NT Problem
All Stories have Happy Endings
+ February 2015
MATHCOUNTS
+ January 2015
AMC 12A 2015
2014 Reflection
+ December 2014
Killing an AIME #15
Collegiate Thoughts and December TST #1
Only MIT
+ November 2014
Baltic Way Part 1
A Few AIME-level Problems and some Subliminal Advertising
+ October 2014
I haven't posted here in over a month
+ September 2014
A Few Problems
A Brief Explanation of e
A Box of Plaques is like a Time Capsule
+ August 2014
Moar Geo
The OMO Forum
Goals for 2015
"Bridging the Olympiad Gap" Solutions
That Famous Mandelbrot Problem
Interstellar Math Madness?
4000th post!
+ July 2014
A Tribute to Two Lost Classmates
Brett Farve
iTest Tournament of Champions 2008 Round 3 #5
iTest Tournament of Champions 2008 Round 2
iTest Tournament of Champions 2008 Round 1
Interest in Mock Mandelbrot?
+ June 2014
Post-Retirement Update #2: A Look Back on School Goals
+ May 2014
Post-Retirement Update #1
Farewell Mock Geometry "AMC"
+ April 2014
Princeton Splash 2014
Desperate
help
Purple Comet 2014
Olympiad Geometry
Purple Comet 2014
USAMO sadness
+ March 2014
Hmm I haven't blogged on this in a while
You will make it dj
To make you feel better from the previous post
AIME I and a Cursory Reflection
Week of Hell
Some Entry-Level ISL
+ February 2014
More Combo
Combo and NT
I <3 Geo
Mock AIME by ahaanomegas, codyj, djmathman, and yugrey!
SPARC
Honest Opinions
Poles and Polars
2014 AMC 12A
Super Bowl XLVIII
+ January 2014
Through the Power of whitehouse.gov
What a weird problem
You have been banned
Hmm so I guess I haven't posted here in a while
Help NT problem
This has been the first
+ December 2013
Hello, the result is very ugly
Miscellaneous Thoughts and an Inequality
3 days until
hmmm
Brilliant.org
Symphonic Orchestra Trip
Some Geo
Thanksgiving Break Math
+ November 2013
Mock AMCs
PUMaC and some Geo
Touching Functional Equations Testimonial
A Problem
Science Olympiad
+ October 2013
Physics is Phun
Sigh
It's an Olympiad Inequality! (solved during sleeping)
Update on School Goals
Darn it
Recursion is cool
+ September 2013
Is it just me
Induction is too OP
School Goals for 2013-2014
Math Prize for Girls
An Objective Perspective about the State of US Math Education
Contrib
+ August 2013
A nice number theory
Yo dawg
A Potpourri of Math Problems
A troll problem
Unfortunately
I have no life
I would call this a success
A Comparison Between Two Solutions: AMSP Santa Cruz Team Contest
A Slick Combinatorics Problem
Contribs Wanted, Test-Solvers Wanted, Some Math, and Other Stuff
+ July 2013
Combinatorially Thinking?
Advice for Running a Math Club? and some random NT
AwesomeMath Reflection Post
IMO Day 1 (Not) Tomorrow
AMSP Mock AIME at Cornell
AMSP Mock AIME/Obligatory Week 2 Post
Team Contest Round 1
Obligatory AMSP Week 1 Post
+ June 2013
Tell me what's wrong with this picture
AwesomeMath Cornell 2013 and a Problem
School is (almost) FINALLY over.
A most interesting problem
Vote!
Finals start tomorrow
Five stars
Who Wants to Solve an IMO Problem?
User Evaluation
Rampant Hypocrisy on AoPS
The Art of Unnecessarily Bashing Inequalities
+ May 2013
International Physics Online Olympiad: IPhOO
Update on the iTest Problems
iTest 2008
An Attempt at Writing a One-Line Proof
A Random Combo Problem
School Elections
Problems from the Bus
Asymptote
In an effort to align the Barts
NJ State Biology Exam Tomorrow
USAJMO Official Score Report
AP Calculus BC
Hmm darn
USAJMO Report
+ April 2013
USAJMO Wishes
A Last-Minute Problem
Graph of Number of Thanks per Month
That Classic MOP Geometry Problem
Russian MO's prepare you for USAJMO, right?
congrats dude
USAMO/USAJMO qualification indeces
Brilliant.org Physics
Spread the word
Progression of USAJMO indeces so far
+ March 2013
I guess I was a liar then
All-Russian MO
A beautiful problem
Good luck to all taking the AIME tomorrow!
Science Olympiad States 2013
ASTA Strings Festival 2013
+ February 2013
Hmm almost forgot
2006 MOSP Homework Algebra 1.4
2006 MOSP Homework Algebra 1.2
2006 MOSP Homework Algebra 1.1
IMO 1963 Problem 3
IMO 1962 Problem 2
IMO 1962 Problem 1
+ January 2013
Brilliant.org Level 5 Sample #3
Darn USAMOs are hard
Super Bowl XLVII
Midterms in 1.5 weeks
Science Olympiad Regionals
AwesomeMath Cornell 2013
+ December 2012
A Russia 1992 Inequality from BT's Blog
Math is hard
Mathematical Olympiad Challenges
A Puerto Rican Geometric Inequality
Inequalities Galore
+ November 2012
Some MathZoom Induction Problems and 2011 USAJMO #5
2008 AIME I Problem 14
+ October 2012
Wow
2012 Panafrican Mathematics Olympiad #1
AoPS Introduction to Geometry Problem
Some Series Problems
+ September 2012
More Geo and Some Algebra
Some Geo Problems
I finally did it
+ August 2012
Pell Equation Olympiad Problem
Have you ever had that feeling
A problem from Bulgaria 1993
Some Inequality Problems
Schedule! and Some Easy Problems
Recursive Induction, and an AIME #12
+ July 2012
It's an olympiad inequality!
Some old IMTS NT
2007 AMC 12A #25, Intermediate Algebra #11.58
To celebrate 3000 views
Complex number bashing
Olook a Romanian Diophantine Equation
My First Problem After MathZoom
MathZoom Reflection Post
Yet Another Obligatory MathZoom Post
Obligatory During-MathZoom Post
+ June 2012
MathZoom 2012 @ RPI
Hey!
Equation from M&IQ
+ May 2012
NT Problem from Belarus MO 1994 (PEN D20)
1984 Balkan MO #1
2007 JBMO Problem 1
Introductory Complex Number Bash
+ April 2012
I just realized
Algebra #30: Quick Olympiad Problem
+ March 2012
AIME I = AIME II (and a couple of relatively simple problems)
Also jumping onto the bandwagon
I feel stupid
Paula the painter was RECYCLED?
AIME I tomorrow...
+ February 2012
MathZoom 2012
AMC Unofficial Results
+ January 2012
Algebra #30
+ December 2011
Geometry #10: Yay first legit Olympiad Geo proof
Geometry #9: Yay first Olympiad Geo Proof
Dang
Revived
An Efficient way to Draw a Building
Intermediate Algebra Chapter 4.2.5 Problem
Geometry #8/Trigonometry #5: Circular Arcs
+ November 2011
Combinatorics #1: Narrowing Down Choices
Algebra #29: Vieta's Expression
Aw dang...
Algebra #28/Trigonometry #6: My Prediction was Wrong
GAAAAAAAAAAAH
42 days
Algebra #27
Predicting When I Will Solve my First AIME #15
Trigonometry #6: Find the Error
BASKETBALL
Sonnhard speaks out!
What resources would one suggest
+ October 2011
Algebra #26
I need to increase my post quality
You don't know how good it feels
Nobody uses the search function anymore...
Coefficient of a Polynomial Function
There Was A Moose
Contributor Check Results
I really should stop liking math so much
Trigonometry #5 and an Interesting Discovery
USAMTS Round 1 is now Over!
Algebra #25
Contributor Check
Algebra #24
Algebra#23
Thinking about Assisting MathCOUNTS Team
Change Your Avatar
2011 Users by Post Count - October 2011 Top 25
Darjn, Asymptote is pretty beast
Happy birthday
+ September 2011
I wish my area had a math circle
I seem to end threads a lot
Geometry #7/Trigonometry #4
Algebra #22
Algebra #21
Algebra #20
Gen8 is gone
Our Assumptions were Right!
Hrm
Who is this kid?
Algebra #19/Number Theory #10
AMC10 Test Results!
Lolwut?
+ August 2011
Geometry #6 and Trigonometry #3
Algebra #18
Algebra #17b
Algebra #17a
Your Turn #2
Your Turn! #1
Algebra #16/Number Theory #9
Geometry #5
Geometry #4
Geometry #3
Geomretry #2
Algebra #15
Algebra #14
Geometry #1
Algebra #13
Number Theory #8
Algebra #12
Algebra #11
Number Theory #7
Algebra #10
Algebra #9
Algebra #8
Algebra #7
Algebra #6
Trigonometry#2 and Algebra#5
Algebra #4
V/LA
Algebra #3
Number Theory #6
Number Theory #5
Number Theory #4
Trigonometry #1
Number Theory #3
Number Theory #2
Algebra #2
Algebra #1
Number Theory #1
New Blog!
Shouts
Submit

  • dj so orz :omighty:

    by Yiyj1, Mar 29, 2025, 1:42 AM

  • legendary problem writer

    by Clew28, Jul 29, 2024, 7:20 PM

  • orz $$\,$$

    by balllightning37, Jul 26, 2024, 1:05 AM

  • hi dj $ $ $ $

    by OronSH, Jul 23, 2024, 2:14 AM

  • i wanna submit my own problems lol

    by ethanzhang1001, Jul 20, 2024, 9:54 PM

  • hi dj, may i have the role of contributer? :D

    by lpieleanu, Feb 23, 2024, 1:31 AM

  • This was helpful!

    by YIYI-JP, Nov 23, 2023, 12:42 PM

  • waiting for a recap of your amc proposals for this year :D

    by ihatemath123, Feb 17, 2023, 3:18 PM

  • also happy late bday man! i missed it by 2 days but hope you are enjoyed it

    by ab456, Dec 30, 2022, 10:58 AM

  • Contrib? :D

    by MC413551, Nov 20, 2022, 10:48 PM

  • :love: tfw kakuro appears on amc :love:

    by bissue, Aug 18, 2022, 4:32 PM

  • Hi dj :)

    by 799786, Aug 10, 2022, 1:44 AM

  • Roses are red,
    Wolfram is banned,
    The best problem writer is
    Djmathman

    by ihatemath123, Aug 6, 2022, 12:19 AM

  • hello :)

    by aidan0626, Jul 26, 2022, 5:49 PM

  • Do you have a link to your main blog that you started after graduating from high school, I couldn't find it. @dj I met you IRL at Awesome Math summer Program several years ago.

    by First, Mar 1, 2022, 5:18 PM

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