geometry

No. 291

A new geometric design every day

Satie

7

Inktober 2018 - Week 2

Started getting into a stride on the second week, coming up with some interesting designs and trying new things.  I really would like to spend more time learning to loosen up and make my designs appear more ‘organic’, as if they are breathing or being generated.  I think this is achieved in some of these.

Late in the week however, I hit a bit of a creative wall.  Feeling like a lot of what I am coming up with is too heavily inspired by others.  Falling behind a bit on the Inktober schedule but I will be taking my time to make sure what I come up with feels like my own work.

Hand drawn between Oct 8-15, 2018

Geometric pattern  BOU039

Orb

“Lunar”

cartographie de fouille

No. 279

A new geometric design every day

A beautiful geometric visualization of positive-valued binomial expansions, the algebraic expressions produced by raising sums of variables (a, b) to natural-valued powers n. The algebraic structures and procedures of binomial expansion are described by the binomial theorem–which, in turn, is proved by the above figures.

Given (a+b)^n, there will be (n+1)-many terms, c(a^(n-m))(b^m), where c is a constant, and a and b are variables.

By tradition, these terms are arranged in descending order by powers of the leading term, a. Accordingly, the binomial expansion of (a+b)^n begins with the term having the highest power of a, which is a^n for all n

The remaining n-many terms are ordered such that the exponent of each successive a term (n-m) decreases by one. Correspondingly, the exponent of the b term (m) increases by one, such that (n-m)+m=n

The binomial coefficients c for each successive term c(a^(n-m))(b^m) are described by Pascal’s triangle. Given (a+b)^n, the nth row of Pascal’s triangle contains (n+1)-many numbers, which are the coefficients c, listed in the order described above.

Note that the exponent n is the dimension of the figures pictured above. This is no coincidence; the term (a+b)^n can be depicted geometrically by a figure whose measure (length, area, volume, hypervolume, etc.) is the quantity produced by multiplying (a+b), n-many times.

Additionally, observe that the coefficients c give the quantity of n-dimensional figures required to fill in the missing bits of area, as illustrated by the figures. For example, in order to fill the volume (a+b)^3, we use two cubes of volume a^3 and b^3, and the remainder is filled by 3 “plate-like” figures and 3 “tube-like” figures (each of whose dimensions are (a^2)b and a(b^2), respectively).

Mathematics is beautiful. <3

I’m Back

Photographer: Fabrizio Raschetti

No. 240

A new geometric design every day

2

Eckhard Neumann, Functional Graphic Design in the 20’s, Reinhold, New York, NY, 1967

(via Letterform Archive)

2

By Jumbo Tsui for Sans Titre