Happy Valentine's Day!

Happy Valentine's Day to one and all!

This set contains the top picks of the Valentine's Day Themed Content Contest. Hope that gives a kick-start to your celebration of the day! :)

Here are the top 6 picks:

  1. Valentine Vinculum - Part 2

  2. Isn't 1000 such a huge number?

  3. Late for my date!

  4. Romeo and Juliet without Shakespeare!

  5. Geometry of Love

  6. The Four Rings Story

If you are looking for more, check out the note at the end of the set.

I thank you all for these wonderful submissions. And lastly, I thank my sweetheart for making the day special!

P. S.: I can't resist the temptation of sharing a recoloring of my avatar in this note to celebrate this occasion:


def f(z):x = real(z)y = imaginary(z)return (x^2 + y^2 -1)^3 - x^2*y^3

complex_plot(lambda z: (1/f(z)*i^(z+1)),(-1.5,1.5),(-1.5,1.5),plot_points=300)

Note by Agnishom Chattopadhyay
5 years, 6 months ago

No vote yet
1 vote

  Easy Math Editor

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

  • Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused .
  • Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone.
  • Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge.
  • Stay on topic — we're all here to learn more about math and science, not to hear about your favorite get-rich-quick scheme or current world events.

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold

- bulleted
- list

  • bulleted
  • list

1. numbered
2. list

  1. numbered
  2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1

paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
    # 4 spaces, and now they show
    # up as a code block.

    print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.
2 \times 3 2×3 2 \times 3
2^{34} 234 2^{34}
a_{i-1} ai1 a_{i-1}
\frac{2}{3} 23 \frac{2}{3}
\sqrt{2} 2 \sqrt{2}
\sum_{i=1}^3 i=13 \sum_{i=1}^3
\sin \theta sinθ \sin \theta
\boxed{123} 123 \boxed{123}


Sort by:

Top Newest

NASA photos(mail) -


By Christopher Boo(mail)

Ever Heard of a Building that can Melt A Jaguar Car ?

The 'Walkie-Talkie' building in London's financial district has the infamous reputation of being able to melt parts of cars that are parked nearby. The curve-shaped 'Walkie-Talkie' building has now been dubbed 'Walkie-Scorchie' after it caused £950 of damage to a high-spec Jaguar parked nearby.

Architectural enthusiasts on seeing this image of the building would now have noticed the parabolic and reflective nature of the building. The whole blunder is caused by those aspects of the building.

How does it happen?

The parabolic nature of the building allows for sunlight to be reflected from the mirrored panels used on the building. The tall and irregular-shaped building faces in such a way that sunlight bounces off of it and heads toward the ground, nearby buildings, and vehicles.

The intense rays are given off for two hours a day when the sun reaches a certain position in the sky, managing to warp the panels and side view mirrors on the cars parked within the focal length of the concave mirror-ed building .

The glare is so hot that it warped the side view mirror.

As the sun moves the glare will be at different positions on different buildings in different areas at different times. Therefore the problem is bigger than one thinks.

Now as a temporary solution, City of London has agreed to do away with three parking spaces in the direct path of the reflected sunbeams . Architects are trying to create a long-term solution for this blunder.

U Z - 5 years, 5 months ago

Log in to reply

Please check mine

Happy Valentines Day 2015!!!!!!!!

Rindell Mabunga - 5 years, 5 months ago

Log in to reply

Nice problem, thanks

Agnishom Chattopadhyay - 5 years, 5 months ago

Log in to reply

Same to you , dude .

A Former Brilliant Member - 5 years, 5 months ago

Log in to reply


Agnishom Chattopadhyay - 5 years, 5 months ago

Log in to reply

The equation isnt fit in matlab...guide me/

NaIn Bhutto - 5 years, 5 months ago

Log in to reply

It is not matlab code

Agnishom Chattopadhyay - 5 years, 5 months ago

Log in to reply

Wont it be easier to do this in polar co-ordoninates. r=2a(1+cos theta) for theta in [-pi,pi] . Then make x=r cos theta and y= r sin theta

Anand Santhanakrishnan - 5 years, 5 months ago

Log in to reply

It does not produce that nice an image. Compare your polar plot with mine!

Agnishom Chattopadhyay - 5 years, 5 months ago

Log in to reply

thank you and happy valentine day for all.

Raafat Mouhareb - 5 years, 5 months ago

Log in to reply


Problem Loading...

Note Loading...

Set Loading...