G is a group, g is an element in G
H is a subgroup of G, h is an element in H
K is the kernel of a group homomorphism, k is an element in K
R is a ring, r is an element in R
I is an ideal, a is an element in I
F is a field
i, j, and k are indices

but m and n are usually used in the context of mn while p and q in p/q. so m and n are orange and yellow but p and q are navy blue

im so weird