[Imprint][Data Privacy Statement][E-Mail]

View long theorem info. View the proof. Back to main index. View the specification. View theorem base summary, View theorem base listing, the used properties by spec, the dependency list, the symbol table,

Proof step 1 from proof ex-minimal-new-fd (conclusion)

⊦ ∃ fd. ¬ fd ∈ ofh ∧ (∀ m. ¬ m ∈ ofh → fd ≤ m)

User applied rule cut formula

And obtained the following new goals

Proof step 2:
∃ n. ¬ n ∈ ofh ⊦ ∃ fd. ¬ fd ∈ ofh ∧ (∀ m. ¬ m ∈ ofh → fd ≤ m)
Proof step 8:
⊦ ∃ fd. ¬ fd ∈ ofh ∧ (∀ m. ¬ m ∈ ofh → fd ≤ m), ∃ n. ¬ n ∈ ofh

Rule argument

fma: ∃ n. ¬ n ∈ ofh

Additional information

Used formulas: ∃ n. ¬ n ∈ ofh