Database
SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
Mathbox for Rohan Ridenour
Shorter primitive equivalent of ax-groth
Primitive equivalent of ax-groth
rr-grothprim
Metamath Proof Explorer
Description: An equivalent of ax-groth using only primitives. This uses only 123
symbols, which is significantly less than the previous record of 163
established by grothprim (which uses some defined symbols, and
requires 229 symbols if expanded to primitives). (Contributed by Rohan
Ridenour , 13-Aug-2023)
Ref
Expression
Assertion
rr-grothprim
⊢ ¬ ∀ 𝑦 ( 𝑥 ∈ 𝑦 → ¬ ∀ 𝑧 ( 𝑧 ∈ 𝑦 → ∀ 𝑓 ¬ ∀ 𝑤 ( 𝑤 ∈ 𝑦 → ¬ ∀ 𝑣 ¬ ( ( ∀ 𝑡 ( 𝑡 ∈ 𝑣 → 𝑡 ∈ 𝑧 ) → ¬ ( 𝑣 ∈ 𝑦 → ¬ 𝑣 ∈ 𝑤 ) ) → ¬ ∀ 𝑖 ( 𝑖 ∈ 𝑧 → ( 𝑣 ∈ 𝑦 → ( 𝑖 ∈ 𝑣 → ( 𝑣 ∈ 𝑓 → ¬ ∀ 𝑢 ( 𝑢 ∈ 𝑓 → ( 𝑖 ∈ 𝑢 → ¬ ∀ 𝑜 ( 𝑜 ∈ 𝑢 → ∀ 𝑠 ( 𝑠 ∈ 𝑜 → 𝑠 ∈ 𝑤 ) ) ) ) ) ) ) ) ) ) ) )
Proof
Step
Hyp
Ref
Expression
1
gruex
⊢ ∃ 𝑦 ∈ Univ 𝑥 ∈ 𝑦
2
1
ax-gen
⊢ ∀ 𝑥 ∃ 𝑦 ∈ Univ 𝑥 ∈ 𝑦
3
rr-grothprimbi
⊢ ( ∀ 𝑥 ∃ 𝑦 ∈ Univ 𝑥 ∈ 𝑦 ↔ ∀ 𝑥 ¬ ∀ 𝑦 ( 𝑥 ∈ 𝑦 → ¬ ∀ 𝑧 ( 𝑧 ∈ 𝑦 → ∀ 𝑓 ¬ ∀ 𝑤 ( 𝑤 ∈ 𝑦 → ¬ ∀ 𝑣 ¬ ( ( ∀ 𝑡 ( 𝑡 ∈ 𝑣 → 𝑡 ∈ 𝑧 ) → ¬ ( 𝑣 ∈ 𝑦 → ¬ 𝑣 ∈ 𝑤 ) ) → ¬ ∀ 𝑖 ( 𝑖 ∈ 𝑧 → ( 𝑣 ∈ 𝑦 → ( 𝑖 ∈ 𝑣 → ( 𝑣 ∈ 𝑓 → ¬ ∀ 𝑢 ( 𝑢 ∈ 𝑓 → ( 𝑖 ∈ 𝑢 → ¬ ∀ 𝑜 ( 𝑜 ∈ 𝑢 → ∀ 𝑠 ( 𝑠 ∈ 𝑜 → 𝑠 ∈ 𝑤 ) ) ) ) ) ) ) ) ) ) ) ) )
4
2 3
mpbi
⊢ ∀ 𝑥 ¬ ∀ 𝑦 ( 𝑥 ∈ 𝑦 → ¬ ∀ 𝑧 ( 𝑧 ∈ 𝑦 → ∀ 𝑓 ¬ ∀ 𝑤 ( 𝑤 ∈ 𝑦 → ¬ ∀ 𝑣 ¬ ( ( ∀ 𝑡 ( 𝑡 ∈ 𝑣 → 𝑡 ∈ 𝑧 ) → ¬ ( 𝑣 ∈ 𝑦 → ¬ 𝑣 ∈ 𝑤 ) ) → ¬ ∀ 𝑖 ( 𝑖 ∈ 𝑧 → ( 𝑣 ∈ 𝑦 → ( 𝑖 ∈ 𝑣 → ( 𝑣 ∈ 𝑓 → ¬ ∀ 𝑢 ( 𝑢 ∈ 𝑓 → ( 𝑖 ∈ 𝑢 → ¬ ∀ 𝑜 ( 𝑜 ∈ 𝑢 → ∀ 𝑠 ( 𝑠 ∈ 𝑜 → 𝑠 ∈ 𝑤 ) ) ) ) ) ) ) ) ) ) ) )
5
4
spi
⊢ ¬ ∀ 𝑦 ( 𝑥 ∈ 𝑦 → ¬ ∀ 𝑧 ( 𝑧 ∈ 𝑦 → ∀ 𝑓 ¬ ∀ 𝑤 ( 𝑤 ∈ 𝑦 → ¬ ∀ 𝑣 ¬ ( ( ∀ 𝑡 ( 𝑡 ∈ 𝑣 → 𝑡 ∈ 𝑧 ) → ¬ ( 𝑣 ∈ 𝑦 → ¬ 𝑣 ∈ 𝑤 ) ) → ¬ ∀ 𝑖 ( 𝑖 ∈ 𝑧 → ( 𝑣 ∈ 𝑦 → ( 𝑖 ∈ 𝑣 → ( 𝑣 ∈ 𝑓 → ¬ ∀ 𝑢 ( 𝑢 ∈ 𝑓 → ( 𝑖 ∈ 𝑢 → ¬ ∀ 𝑜 ( 𝑜 ∈ 𝑢 → ∀ 𝑠 ( 𝑠 ∈ 𝑜 → 𝑠 ∈ 𝑤 ) ) ) ) ) ) ) ) ) ) ) )