Peter Krautzberger on the web

Red workbook, p10

Source

red workbook, p10
Red Workbook, p.10

Transcript

partial Translation

Notes

The previous page is followed by another attempt of research ideas.

First there’s a note on a basic but important observation for \beta \mathbb{N} – it contains lots of copies of \mathbb{Z} . I remember trying to figure this out and ending up asking Sabine Koppelberg – and the solution took two second, leaving me miserably disappointed by my failure.

To understand the second part of the note, I should explain that my Diplom thesis was about large cardinals and reflection principles. The first few things I tried that summer came out of that perspective – looking at cardinals (as a semingroup with ordinal addition/multiplication), hoping to connect with large cardinal theory. Nothing ever came of it but perhaps we’ll encounter that later in this workbook.