Euler’s Identity
eiπ + 1 = 0
Five constants, one compact relation
Mathematics
20 at launch. More in the works.
Find your Expression.
An Expression is the intellectual idea on the product — equation, constant, symbol, phrase, slogan, or technical reference. Every one should mean something before we ask you to wear it.
Mathematics
Mathematics
Golden Ratio
(1 + √5) / 2
A self-repeating proportion near 1.618
Mathematics
Imaginary Unit
i² = −1
The number that makes complex arithmetic possible
Mathematics
Logarithmically Awesome
LOGARITHMICALLY AWESOME
Because linear praise would be too ordinary
Mathematics
Pythagorean Theorem
a² + b² = c²
The defining metric relation of a right triangle
Mathematics
Zero Factorial
0! = 1
The empty case that keeps the pattern working
Mathematics
Calculated to Perfection
CALCULATED TO PERFECTION
Precision with a wink
Mathematics
Physics & science
Physics & science
Fine-Structure Constant
1 / α ≈ 137.036
A dimensionless measure of electromagnetic coupling
Physics
Mass–Energy Equivalence
E = mc²
Mass has an enormous rest-energy equivalent
Physics
Planck Relation
E = hf
Photon energy is proportional to frequency
Physics
Science!
SCIENCE!
The exclamation point is intentional
Evidence
Question Everything
QUESTION EVERYTHING
Doubt as a tool, not a pose
Scientific skepticism
Stay Curious
STAY CURIOUS
The habit behind every rabbit hole
Curiosity
Engineering, code & systems
Engineering, code & systems
Complex Exponential
ejωt
The compact language of rotating phase
Electrical engineering
Stay in Phase
STAY IN PHASE
Alignment is everything when phase matters
Electrical engineering
System Nominal
SYSTEM NOMINAL
Within expected parameters
Engineering
Optimized!
OPTIMIZED!
Best — according to the objective and constraints
Engineering
In Code We Trust
IN CODE WE TRUST
Rules are only as good as the code implementing them
Computing
Buff Acquired
BUFF ACQUIRED
A status message for leveling up
Gaming
Money & systems thinking
Money & systems thinking
Not everyone is supposed to get it.
The best Expressions create a quiet moment of recognition between people who know the same thing. Someone else may only see an interesting equation or phrase. That difference is intentional.
The idea is only half the choice
Find the Expression. Then find your hat.
Every featured hat is an example, not a limitation. Explore the colors, profiles, washes, and styles, then head to the store when you are ready.