Geometry Updated +Created
Number theory Updated +Created
Applied mathematics Updated +Created
Recreational mathematics Updated +Created
Clothing Updated +Created
Cryogenics Updated +Created
Electronics Updated +Created
Explosive Updated +Created
Types:
Sensor Updated +Created
Mechanical engineering Updated +Created
Exoticism Updated +Created
Video 1.
Emmenez-moi by Charles Aznavour (1968)
Source. The ultimate ode to exoticism.
Atlas (topology) Updated +Created
Collection of coordinate charts.
The key element in the definition of a manifold.
Lie group-Lie algebra correspondence Updated +Created
Every Lie algebra corresponds to a single simply connected Lie group.
The Baker-Campbell-Hausdorff formula basically defines how to map an algebra to the group.
Bibliography:
Avatar: The Way of Water Updated +Created
Depth of a quantum circuit Updated +Created
This is an important metric, because it takes some time for the quantum operations to propagate, and so the depth of a circuit gives you an idea of how long the coherence time a hardware needs to support a given circuit.
Numerical analysis Updated +Created
Techniques to get numerical approximations to numeric mathematical problems.
The entire field comes down to estimating the true values with a known error bound, and creating algorithms that make those error bounds asymptotically smaller.
Not the most beautiful field of pure mathematics, but fundamentally useful since we can't solve almost any useful equation without computers!
The solution visualizations can also provide valuable intuition however.
Important numerical analysis problems include solving:
Australian company Updated +Created
Aum Shinrikyo Updated +Created
Automated theorem proving Updated +Created
AGI-complete in general? Obviously. But still, a lot can be done. See e.g.:

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