people.math.gatech.edupeople.math.gatech.edu/~heil/4107/spring18/chapter2.3.pdf · \(some authors...
TRANSCRIPT
heil
Line
heil
Typewritten Text
(some authors write
heil
Pencil
heil
Typewritten Text
for subset)
heil
Pencil
heil
Pencil
heil
Pencil
heil
Typewritten Text
(Hence H is nonempty)
heil
Typewritten Text
(under the operation of addition)