Note-taking symbols and abbreviations for your reference:
Abbreviations in Note taking
Use only the abbreviations that fit your needs and that you will remember easily. A good idea is to introduce only a few abbreviations into your note taking at a time.
Symbols helpful in math -- these are commonly used in texts and references.
S = sum
f = frequency
Leave out periods in standard abbreviations.
cf = compare
e.g. = example
dept = department
Use only the first syllable of a word.
pol = politics
dem = democracy
lib = liberal
cap = capitalism
Use entire first syllable and only 1st letter of 2nd syllable.
pres = presentation
subj = subject
ind = individual
cons = conservative
Eliminate final letters. Use just enough of the word to form a recognizable abbreviation.
assoc = associate
biol = biology
info = information
ach = achievement
chem = chemistry
max = maximum
intro = introduction
conc = concentration
min = minimum
rep = repetition
Omit vowels, retain only enough consonants to give a recognizable skeleton