This is just the same as my own conception, then again I also used (and can highly recommend) Hatcher. He kindly provides a pdf on his webpage here: https://pi

This is just the same as my own conception, then again I also used (and can highly recommend) Hatcher. He kindly provides a pdf on his webpage here: https://pi.math.cornell.edu/~hatcher/AT/ATpage.html https://pi.math.cornell.edu/~hatcher/AT/ATpage.html