I am confused about the concept of "least upper bound". Is this line the limt of the {an} sequence. If so, how can we prove it?(adsbygoogle = window.adsbygoogle || []).push({});

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Least upper bound

**Physics Forums | Science Articles, Homework Help, Discussion**