A strange and perhaps useful formula for counting twin primes in certain intervals:

https://math.stackexchange.com/questions/4299011/a-formula-that-counts-exactly-the-twin-prime-pairs-occuring-in-an-interval-a-b

I have started regularly exercising as I believe this is the key too good health. It also aids the body when learning new intellectual concepts. One has to move for their mind to groove.

Reverse Homology Theory

Quiver - A Commutative Diagram Editor (by varkor)

Let's go on a adventure together into abstract space-time. What homological and categorical mysteries await us!