| Step | Hyp | Ref | Expression | 
						
							| 1 |  | lpolset.v | ⊢ 𝑉  =  ( Base ‘ 𝑊 ) | 
						
							| 2 |  | lpolset.s | ⊢ 𝑆  =  ( LSubSp ‘ 𝑊 ) | 
						
							| 3 |  | lpolset.z | ⊢  0   =  ( 0g ‘ 𝑊 ) | 
						
							| 4 |  | lpolset.a | ⊢ 𝐴  =  ( LSAtoms ‘ 𝑊 ) | 
						
							| 5 |  | lpolset.h | ⊢ 𝐻  =  ( LSHyp ‘ 𝑊 ) | 
						
							| 6 |  | lpolset.p | ⊢ 𝑃  =  ( LPol ‘ 𝑊 ) | 
						
							| 7 |  | elex | ⊢ ( 𝑊  ∈  𝑋  →  𝑊  ∈  V ) | 
						
							| 8 |  | fveq2 | ⊢ ( 𝑤  =  𝑊  →  ( LSubSp ‘ 𝑤 )  =  ( LSubSp ‘ 𝑊 ) ) | 
						
							| 9 | 8 2 | eqtr4di | ⊢ ( 𝑤  =  𝑊  →  ( LSubSp ‘ 𝑤 )  =  𝑆 ) | 
						
							| 10 |  | fveq2 | ⊢ ( 𝑤  =  𝑊  →  ( Base ‘ 𝑤 )  =  ( Base ‘ 𝑊 ) ) | 
						
							| 11 | 10 1 | eqtr4di | ⊢ ( 𝑤  =  𝑊  →  ( Base ‘ 𝑤 )  =  𝑉 ) | 
						
							| 12 | 11 | pweqd | ⊢ ( 𝑤  =  𝑊  →  𝒫  ( Base ‘ 𝑤 )  =  𝒫  𝑉 ) | 
						
							| 13 | 9 12 | oveq12d | ⊢ ( 𝑤  =  𝑊  →  ( ( LSubSp ‘ 𝑤 )  ↑m  𝒫  ( Base ‘ 𝑤 ) )  =  ( 𝑆  ↑m  𝒫  𝑉 ) ) | 
						
							| 14 | 11 | fveq2d | ⊢ ( 𝑤  =  𝑊  →  ( 𝑜 ‘ ( Base ‘ 𝑤 ) )  =  ( 𝑜 ‘ 𝑉 ) ) | 
						
							| 15 |  | fveq2 | ⊢ ( 𝑤  =  𝑊  →  ( 0g ‘ 𝑤 )  =  ( 0g ‘ 𝑊 ) ) | 
						
							| 16 | 15 3 | eqtr4di | ⊢ ( 𝑤  =  𝑊  →  ( 0g ‘ 𝑤 )  =   0  ) | 
						
							| 17 | 16 | sneqd | ⊢ ( 𝑤  =  𝑊  →  { ( 0g ‘ 𝑤 ) }  =  {  0  } ) | 
						
							| 18 | 14 17 | eqeq12d | ⊢ ( 𝑤  =  𝑊  →  ( ( 𝑜 ‘ ( Base ‘ 𝑤 ) )  =  { ( 0g ‘ 𝑤 ) }  ↔  ( 𝑜 ‘ 𝑉 )  =  {  0  } ) ) | 
						
							| 19 | 11 | sseq2d | ⊢ ( 𝑤  =  𝑊  →  ( 𝑥  ⊆  ( Base ‘ 𝑤 )  ↔  𝑥  ⊆  𝑉 ) ) | 
						
							| 20 | 11 | sseq2d | ⊢ ( 𝑤  =  𝑊  →  ( 𝑦  ⊆  ( Base ‘ 𝑤 )  ↔  𝑦  ⊆  𝑉 ) ) | 
						
							| 21 | 19 20 | 3anbi12d | ⊢ ( 𝑤  =  𝑊  →  ( ( 𝑥  ⊆  ( Base ‘ 𝑤 )  ∧  𝑦  ⊆  ( Base ‘ 𝑤 )  ∧  𝑥  ⊆  𝑦 )  ↔  ( 𝑥  ⊆  𝑉  ∧  𝑦  ⊆  𝑉  ∧  𝑥  ⊆  𝑦 ) ) ) | 
						
							| 22 | 21 | imbi1d | ⊢ ( 𝑤  =  𝑊  →  ( ( ( 𝑥  ⊆  ( Base ‘ 𝑤 )  ∧  𝑦  ⊆  ( Base ‘ 𝑤 )  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ↔  ( ( 𝑥  ⊆  𝑉  ∧  𝑦  ⊆  𝑉  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) ) ) ) | 
						
							| 23 | 22 | 2albidv | ⊢ ( 𝑤  =  𝑊  →  ( ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  ( Base ‘ 𝑤 )  ∧  𝑦  ⊆  ( Base ‘ 𝑤 )  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ↔  ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  𝑉  ∧  𝑦  ⊆  𝑉  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) ) ) ) | 
						
							| 24 |  | fveq2 | ⊢ ( 𝑤  =  𝑊  →  ( LSAtoms ‘ 𝑤 )  =  ( LSAtoms ‘ 𝑊 ) ) | 
						
							| 25 | 24 4 | eqtr4di | ⊢ ( 𝑤  =  𝑊  →  ( LSAtoms ‘ 𝑤 )  =  𝐴 ) | 
						
							| 26 |  | fveq2 | ⊢ ( 𝑤  =  𝑊  →  ( LSHyp ‘ 𝑤 )  =  ( LSHyp ‘ 𝑊 ) ) | 
						
							| 27 | 26 5 | eqtr4di | ⊢ ( 𝑤  =  𝑊  →  ( LSHyp ‘ 𝑤 )  =  𝐻 ) | 
						
							| 28 | 27 | eleq2d | ⊢ ( 𝑤  =  𝑊  →  ( ( 𝑜 ‘ 𝑥 )  ∈  ( LSHyp ‘ 𝑤 )  ↔  ( 𝑜 ‘ 𝑥 )  ∈  𝐻 ) ) | 
						
							| 29 | 28 | anbi1d | ⊢ ( 𝑤  =  𝑊  →  ( ( ( 𝑜 ‘ 𝑥 )  ∈  ( LSHyp ‘ 𝑤 )  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 )  ↔  ( ( 𝑜 ‘ 𝑥 )  ∈  𝐻  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) ) ) | 
						
							| 30 | 25 29 | raleqbidv | ⊢ ( 𝑤  =  𝑊  →  ( ∀ 𝑥  ∈  ( LSAtoms ‘ 𝑤 ) ( ( 𝑜 ‘ 𝑥 )  ∈  ( LSHyp ‘ 𝑤 )  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 )  ↔  ∀ 𝑥  ∈  𝐴 ( ( 𝑜 ‘ 𝑥 )  ∈  𝐻  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) ) ) | 
						
							| 31 | 18 23 30 | 3anbi123d | ⊢ ( 𝑤  =  𝑊  →  ( ( ( 𝑜 ‘ ( Base ‘ 𝑤 ) )  =  { ( 0g ‘ 𝑤 ) }  ∧  ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  ( Base ‘ 𝑤 )  ∧  𝑦  ⊆  ( Base ‘ 𝑤 )  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ∧  ∀ 𝑥  ∈  ( LSAtoms ‘ 𝑤 ) ( ( 𝑜 ‘ 𝑥 )  ∈  ( LSHyp ‘ 𝑤 )  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) )  ↔  ( ( 𝑜 ‘ 𝑉 )  =  {  0  }  ∧  ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  𝑉  ∧  𝑦  ⊆  𝑉  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ∧  ∀ 𝑥  ∈  𝐴 ( ( 𝑜 ‘ 𝑥 )  ∈  𝐻  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) ) ) ) | 
						
							| 32 | 13 31 | rabeqbidv | ⊢ ( 𝑤  =  𝑊  →  { 𝑜  ∈  ( ( LSubSp ‘ 𝑤 )  ↑m  𝒫  ( Base ‘ 𝑤 ) )  ∣  ( ( 𝑜 ‘ ( Base ‘ 𝑤 ) )  =  { ( 0g ‘ 𝑤 ) }  ∧  ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  ( Base ‘ 𝑤 )  ∧  𝑦  ⊆  ( Base ‘ 𝑤 )  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ∧  ∀ 𝑥  ∈  ( LSAtoms ‘ 𝑤 ) ( ( 𝑜 ‘ 𝑥 )  ∈  ( LSHyp ‘ 𝑤 )  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) ) }  =  { 𝑜  ∈  ( 𝑆  ↑m  𝒫  𝑉 )  ∣  ( ( 𝑜 ‘ 𝑉 )  =  {  0  }  ∧  ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  𝑉  ∧  𝑦  ⊆  𝑉  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ∧  ∀ 𝑥  ∈  𝐴 ( ( 𝑜 ‘ 𝑥 )  ∈  𝐻  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) ) } ) | 
						
							| 33 |  | df-lpolN | ⊢ LPol  =  ( 𝑤  ∈  V  ↦  { 𝑜  ∈  ( ( LSubSp ‘ 𝑤 )  ↑m  𝒫  ( Base ‘ 𝑤 ) )  ∣  ( ( 𝑜 ‘ ( Base ‘ 𝑤 ) )  =  { ( 0g ‘ 𝑤 ) }  ∧  ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  ( Base ‘ 𝑤 )  ∧  𝑦  ⊆  ( Base ‘ 𝑤 )  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ∧  ∀ 𝑥  ∈  ( LSAtoms ‘ 𝑤 ) ( ( 𝑜 ‘ 𝑥 )  ∈  ( LSHyp ‘ 𝑤 )  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) ) } ) | 
						
							| 34 |  | ovex | ⊢ ( 𝑆  ↑m  𝒫  𝑉 )  ∈  V | 
						
							| 35 | 34 | rabex | ⊢ { 𝑜  ∈  ( 𝑆  ↑m  𝒫  𝑉 )  ∣  ( ( 𝑜 ‘ 𝑉 )  =  {  0  }  ∧  ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  𝑉  ∧  𝑦  ⊆  𝑉  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ∧  ∀ 𝑥  ∈  𝐴 ( ( 𝑜 ‘ 𝑥 )  ∈  𝐻  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) ) }  ∈  V | 
						
							| 36 | 32 33 35 | fvmpt | ⊢ ( 𝑊  ∈  V  →  ( LPol ‘ 𝑊 )  =  { 𝑜  ∈  ( 𝑆  ↑m  𝒫  𝑉 )  ∣  ( ( 𝑜 ‘ 𝑉 )  =  {  0  }  ∧  ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  𝑉  ∧  𝑦  ⊆  𝑉  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ∧  ∀ 𝑥  ∈  𝐴 ( ( 𝑜 ‘ 𝑥 )  ∈  𝐻  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) ) } ) | 
						
							| 37 | 6 36 | eqtrid | ⊢ ( 𝑊  ∈  V  →  𝑃  =  { 𝑜  ∈  ( 𝑆  ↑m  𝒫  𝑉 )  ∣  ( ( 𝑜 ‘ 𝑉 )  =  {  0  }  ∧  ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  𝑉  ∧  𝑦  ⊆  𝑉  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ∧  ∀ 𝑥  ∈  𝐴 ( ( 𝑜 ‘ 𝑥 )  ∈  𝐻  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) ) } ) | 
						
							| 38 | 7 37 | syl | ⊢ ( 𝑊  ∈  𝑋  →  𝑃  =  { 𝑜  ∈  ( 𝑆  ↑m  𝒫  𝑉 )  ∣  ( ( 𝑜 ‘ 𝑉 )  =  {  0  }  ∧  ∀ 𝑥 ∀ 𝑦 ( ( 𝑥  ⊆  𝑉  ∧  𝑦  ⊆  𝑉  ∧  𝑥  ⊆  𝑦 )  →  ( 𝑜 ‘ 𝑦 )  ⊆  ( 𝑜 ‘ 𝑥 ) )  ∧  ∀ 𝑥  ∈  𝐴 ( ( 𝑜 ‘ 𝑥 )  ∈  𝐻  ∧  ( 𝑜 ‘ ( 𝑜 ‘ 𝑥 ) )  =  𝑥 ) ) } ) |