It looks like you're new here. If you want to get involved, click one of these buttons!

- All Categories 2.2K
- Applied Category Theory Course 355
- Applied Category Theory Seminar 4
- Exercises 149
- Discussion Groups 49
- How to Use MathJax 15
- Chat 480
- Azimuth Code Project 108
- News and Information 145
- Azimuth Blog 149
- Azimuth Forum 29
- Azimuth Project 189
- - Strategy 108
- - Conventions and Policies 21
- - Questions 43
- Azimuth Wiki 711
- - Latest Changes 701
- - - Action 14
- - - Biodiversity 8
- - - Books 2
- - - Carbon 9
- - - Computational methods 38
- - - Climate 53
- - - Earth science 23
- - - Ecology 43
- - - Energy 29
- - - Experiments 30
- - - Geoengineering 0
- - - Mathematical methods 69
- - - Meta 9
- - - Methodology 16
- - - Natural resources 7
- - - Oceans 4
- - - Organizations 34
- - - People 6
- - - Publishing 4
- - - Reports 3
- - - Software 21
- - - Statistical methods 2
- - - Sustainability 4
- - - Things to do 2
- - - Visualisation 1
- General 39

## Comments

@Scott #50 – yes, because antisymmetry identifies any two elements in a cycle

`@Scott #50 – yes, because antisymmetry identifies any two elements in a cycle`

@Anindya #50: thanks.

`@Anindya #50: thanks.`

Scott: this is correct! And I'm pretty sure I've convinced Brendan and David to change their terminology so it matches the rest of the world's. They will keep updating their book, fixing mistakes we find... and I think I've managed to get them to make this change too.

`Scott: this is correct! And I'm pretty sure I've convinced Brendan and David to change their terminology so it matches the rest of the world's. They will keep updating their book, fixing mistakes we find... and I think I've managed to get them to make this change too.`

Thanks @Scott, your post is immensely clarifying and exactly the sort of thing I hoped for in studying "applied" category theory.

`Thanks [@Scott](https://forum.azimuthproject.org/profile/1894/Scott%20Finnie), your [post](https://forum.azimuthproject.org/discussion/comment/16340/#Comment_16340) is immensely clarifying and exactly the sort of thing I hoped for in studying "applied" category theory.`

I'm a bit confused by

Remark 1.24. Are Fong & Spivak just saying that what's normally called a "partially ordered set" will be referred to as a "skeletal poset"? It's a bit confusing that a partially ordered set is an extension of something thatsounds like"partially ordered set" in its name.`I'm a bit confused by _Remark 1.24_. Are Fong & Spivak just saying that what's normally called a "partially ordered set" will be referred to as a "skeletal poset"? It's a bit confusing that a partially ordered set is an extension of something that _sounds like_ "partially ordered set" in its name.`

Jared Davis - I've talked Fong and Spivak out of calling partially ordered sets "skeletal posets". Please download the latest copy of

Seven Sketches. The problem that's bothering you will be gone, and Remark 1.24 will be transformed into something more reasonable: a remark pointing out that a skeletal preorder is a poset.`Jared Davis - I've talked Fong and Spivak out of calling partially ordered sets "skeletal posets". Please [download the latest copy of _Seven Sketches_](http://math.mit.edu/~dspivak/teaching/sp18/7Sketches.pdf). The problem that's bothering you will be gone, and Remark 1.24 will be transformed into something more reasonable: a remark pointing out that a skeletal preorder is a poset.`