• Announcements: Welcome back! As before, please watch the videos below in order, and remember to pause as needed if you do not understand something. If you are not able to work it out on your own, send me an email and I will be happy to discuss the details with you. Please note that HW1 is now available online (due Sept 9). Also, details regarding online office hours via Zoom will be emailed to you shortly.

• Video 1: Recap of Lecture 1
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• Video 2: Real numbers
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• Video 3: Archimedean property
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• Video 4: Rational numbers are dense among real numbers
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• Video 5: Existence of n-th root of positive real numbers (Part 1)
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• Video 6: Existence of n-th root of positive real numbers (Part 2)
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• Video 7: Extensions of the real numbers
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• Lecture Notes (static file from above videos): PDF file