Also:
m: used for a second whole number when n is already taken.
p: used for primes
q: used for a second prime.
In general, it feels like the alphabet can be partitioned into “sections” where you can use other letters in the same section for additional variables that will play similar roles. Something like:
[a,b,c,d]; [f,g,h]; [i,j,k]; [m,n]; [p,q]; [r,s,t]; [u,v,w]; [x,y,z]
Sometimes these can be combined: [m,n,p,q]; [p,q,r,s,t]; [r,s,t,u,v,w]; [u,v,w,x,y,z]
Yep, and when you run out of letters in a section you use the core letter from the section with a subscript.
Also:
m: used for a second whole number when n is already taken.
p: used for primes
q: used for a second prime.
In general, it feels like the alphabet can be partitioned into “sections” where you can use other letters in the same section for additional variables that will play similar roles. Something like:
[a,b,c,d]; [f,g,h]; [i,j,k]; [m,n]; [p,q]; [r,s,t]; [u,v,w]; [x,y,z]
Sometimes these can be combined: [m,n,p,q]; [p,q,r,s,t]; [r,s,t,u,v,w]; [u,v,w,x,y,z]
Yep, and when you run out of letters in a section you use the core letter from the section with a subscript.