# MAS61015 Algebraic Topology

Lecturers: Markus Szymik and Neil Strickland

## Module information

The syllabus, timetable and assessment arrangements are

here.

## Lecture notes

Both versions of the notes contain links to various interactive
demonstrations (described below) and videos.

The HTML version is new. It should be better than the PDF for
viewing on a phone, or for reading with a screen reader. I would
welcome any comments on either of these use cases.

There is also a separate
survey of examples
mentioned in the course.

I strongly recommend that you should attend lectures in person if
possible. If you cannot do that, I recommend that you
work from the notes and embedded videos and demonstrations. There
is also a lecture progress page where you
can see which sections of the notes have been covered in lectures.

## Interactive demonstrations

There is a set of

interactive demonstrations
explaining many of the ideas in the course. I will talk through these
in lectures, there are attached YouTube videos, and you can try them
yourself at other times. These are experimental and under development. I
welcome comments about the extent to which they are comprehensible, useful
or interesting.

## Assessment

There will be eight homework assignments in each semester. The
best five in each semester will each count for 2% of the overall
course grade, making 20% in total. The remaining 80% will be
based on a final exam. This will be a 2.5 hour formal closed
book exam with five questions of equal value, of which you will
be asked to complete four.

## Weekly problems

These will appear here as the course progresses.
I would prefer work submitted on paper, but you can send me a scan
by email if necessary.

## Past exam papers

For the 2024-25 version of the course, the best guide is the the real
exams from 2021-22, 2022-23 and 2023-24 and the mock exam from 2021-22. Below
you will also find a large number of questions from earlier years.
Some of these are compatible
with the current version of the course and some are not.
I have also provided a document explaining which material is examinable.

As well as revising the examinable material, you should make sure that
you are familiar with all the examples in the course. These are
summarised in the

survey of examples.

## Contact details

Neil Strickland

N.P.Strickland@sheffield.ac.uk

Hicks Building, Room J26

0114 2223852