Statement:
Nielsen-Schreier Theorem: Every subgroup of a free group is free. Jech [1973b], p 12.
Howard_Rubin_Number: 68
Parameter(s): This form does not depend on parameters
This form's transferability is: Unknown
This form's negation transferability is: Negation Transferable
Article Citations:
Book references
The Axiom of Choice, Jech, T., 1973b
Note connections: