Description: The scalar field of a subcomplex vector space is closed under division. (Contributed by Thierry Arnoux, 22-May-2019)
Ref | Expression | ||
---|---|---|---|
Hypotheses | cvsdiv.f | |
|
cvsdiv.k | |
||
Assertion | cvsdivcl | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cvsdiv.f | |
|
2 | cvsdiv.k | |
|
3 | 1 2 | cvsdiv | |
4 | simpl | |
|
5 | 4 | cvslvec | |
6 | 1 | lvecdrng | |
7 | drngring | |
|
8 | 5 6 7 | 3syl | |
9 | simpr1 | |
|
10 | simpr2 | |
|
11 | simpr3 | |
|
12 | eldifsn | |
|
13 | 10 11 12 | sylanbrc | |
14 | 1 2 | cvsunit | |
15 | 14 | adantr | |
16 | 13 15 | eleqtrd | |
17 | eqid | |
|
18 | eqid | |
|
19 | 2 17 18 | dvrcl | |
20 | 8 9 16 19 | syl3anc | |
21 | 3 20 | eqeltrd | |