Database
SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
Mathbox for Scott Fenton
Surreal numbers - zero and one
df-0s
Metamath Proof Explorer
Definition df-0s
Description: Define surreal zero. This is the simplest cut of surreal number sets.
Definition from Conway p. 17. (Contributed by Scott Fenton , 7-Aug-2024)
Ref
Expression
Assertion
df-0s
Could not format assertion : No typesetting found for |- 0s = ( (/) |s (/) ) with typecode |-
Detailed syntax breakdown
Step
Hyp
Ref
Expression
0
c0s
Could not format 0s : No typesetting found for class 0s with typecode class
1
c0
class ∅
2
cscut
class | s
3
1 1 2
co
class ∅ | s ∅
4
0 3
wceq
Could not format 0s = ( (/) |s (/) ) : No typesetting found for wff 0s = ( (/) |s (/) ) with typecode wff