Tesseract #topology

Brachistochrone Curve

The cardinality of the real numbers line is the same as a finite open interval of the #realnumbers line.

# New channel feature:
A Discussion Group has been added to this Channel.

From now on, under every post you will have a Comments Button. Here is where you can discuss about every post.

In addition, you can also join to our Discussion Group (@mathvisuals_chat). This Group will be used:

- As a meeting point between admins and members. You will be able to communicate us your concerns about the channel.

- For sharing your Contributions and visual creations. (We will share author's name, or not, as you prefer. It is optional. Let us know once you share your visual. If nothing is specified, nothing will be mentioned).

- For posting Other stuff: We will make polls and other necessary things

Thank you all for your collaboration.

Thank you all for your collaboration.
LET'S SPREAD THE VISUALS !!!!!!!!!!!!!!!

#geometry #limits

cos²(x)+sin²(x)=1 #trigonometricidentities

Fermat center #geometry

The #determinant of a 2x2 matrix is the area of a parallelogram

Gamma #function in #complex plane

Belt trick

Yesterday's post, as someone noticed in the discussion chat (Maths Visuals Discussions
https://t.me/mathvisuals_chat), was a trick, not a regular polygon construction with rule and compass exactly but a very close approximation.
As 7 is a Pierpont prime but not a Fermat prime, the regular heptagon is not constructible with compass and straightedge but is constructible with a marked ruler and compass. It is the smallest regular polygon with this property. This type of construction is called a neusis construction. It is also constructible with compass, straightedge and angle trisector.