4 ms·
Provide this legend with the formula. Now how many people understand it? ∈ = is an element of ∀ = for all ∃ = there exists
by abarrett 10y ago
Provide this legend with the formula. Now how many people understand it?
∈ = is an element of
∀ = for all
∃ = there exists
- deleted 10y ago[deleted]
- jspiral 10y agoyep exactly - I have CS degree, rusty on my symbols but knowing them its obvious
- stuartd 10y agoWhat does the colon mean?
- mozrila 10y agoI believe 'such that'
- ruskoi 10y agosuch that
- 2_listerine_pls 10y agosuch that.
- tnecniv 10y agoAs others have said, "such that." It's worth noting that some people use a vertical line instead to mean the same thing.
- ajarmst 10y agoHis response would be that anyone who's studied even a little college math wouldn't need that legend. I learned that notation in High School.
- daveguy 10y agoAnyone who doesn't use that nomenclature on a regular basis is bound to need a refresher legend. The concepts are easily remembered (and used in all kinds of programming). But which direction the e points is less easily remembered.
- marssaxman 10y agoI took three semesters of math in college and don't remember any of those symbols.
- ajarmst 10y agoIf you took three semesters of post-secondary maths and never encountered "∈", you should ask for your money back.
- marssaxman 10y agoI don't know whether I encountered it. Perhaps I just forgot. Either way, it hasn't been a notation used in real life.
- khedoros1 10y agoI learned the details of photosynthesis, the Krebs cycle, and a lot of other basic biochemistry in high school, but I don't remember much of that at all. I did a fair bit of set work in college, but it took me about a minute to dig some of that up to read and understand the relationship that's being described. I don't think I've worked with sets using actual mathematical notation in over 10 years. It wouldn't have surprised me if I couldn't read it (although I would've found it somewhat distressing). The weird part is his audience: active students and researchers within the field of CS. They're the ones that I would've expected to be most likely to understand what it said.
- daveguy 10y agoExactly. This is a nomenclature issue. When this is spelled out it is easily understood. Math is not the issue here. Should CS students have an intro to abstract algebra? Probably. Do CS students (in those programs where CS isn't conflated with IT) take 3+ years of math courses? Yes.