Instructor: John Lind

Office: Krieger 216

Email: jlind[A]math.jhu.edu

Office hours: Tuesday 3.00-5.00

Teaching Assistant: Jeffrey Tolliver

Office: Krieger 201

tolliver[A]math.jhu.edu

**Homework**

__HW 1 (due 2/7)__

Prove that the Remark from the first lecture is true

§13: 1, 2, 4, 6, 8(a)(b)

__HW 2 (due 2/14)__

§16: 3, 8, 9, 10

§17: 3, 5, 6, 10, 13, 16, 21

__HW 3 (due 2/21)__

§18: 1 (and its converse), 2, 12, 13

§19: 3, 6, 7

§20: 2, (4, 5, 8)

__HW 4 (due 2/28)__

§20: 4, 5, 8

§21: 2, 7 (please look up the definition of any unfamiliar terms)

§23: 1, 3, 5, 8

§24: 8, (12 is a suggested super-fun challenge problem, but is not obligatory)

__HW 5 (due 3/7)__

Prove the Cantor-Bernstein-Schroeder Theorem:

If there exist injections f:A-->B and g:B-->A, then |A| = |B|

§19: 9

§24: 10

§26: 1, 3, 6, 7, 8

__HW 6 (due 3/14)__

§26: 12

§27: 3, 6

§28: 1, 6, 7

__HW 7 (due 4/4)__

§22: 3, 4

§29: 1, 6, 7, 8, 11

__HW 8 (due 4/16)__

§30: 4, 5, 13

§31: 3, 5, 7, 9

§32: 6, 7(b)(d)(e)(g)

__HW 9 (due 4/25)__

§33: 2, 11

§34: 1, 3, 4, 7

§36: 5

§37: 1, 2, 3