appell-lerch sum

Questions

What does appell-lerch sum mean?

A generalization of Lambert series with the form

Where does appell-lerch sum come from?

First studied by Paul Émile Appell and Mathias Lerch.

How to pronounce appell-lerch sum

1. Open the pronunciation page — Open the Speakur entry for “appell-lerch sum”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “appell-lerch sum”.
4. Repeat and practice — Say “appell-lerch sum” aloud, matching stress and vowels until it feels natural.