• Announcements: Hello! Your grades for HW1 are now available on Blackboard, and some comments regarding solutions are made in the first video below. Don't forget that HW2 is due on Wednesday! Send me an email or come to office hours on Zoom if you have questions.

• Video 1: Review of HW1 solutions
Download file or watch below

• Video 2: What numbers can be smaller than any positive real number?
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• Video 3: Algebraic numbers form a countable set (useful for HW2 #1)
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• Video 4: Candidates to distance functions (useful for HW2 #3)
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• Video 5: An open cover without finite subcovers
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• Lecture Notes (static file from above videos): PDF file