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Theorem base for Specification real-supinf

This is a listing of all goals defined over the current specification. Axioms are marked yellow, proved theorems green and unproved theorems blue. Click on individual names to get more information on the proof.

Name: Sequent: Type:
lowerbound-def ⊦ r0 ≤ rset ↔ (∀ r. rset(r) → r0 ≤ r) An Axiom
inf-highest-lowerbound ⊦ bounded≥(rset) ∧ r ≤ rset → r ≤ inf(rset) An Axiom
boundedle-def ⊦ bounded≤(rset) ↔ (∃ r0. rset ≤ r0) An Axiom
lowbound-neg-upperbound ⊦ r0 ≤ rset ↔ (λ r. rset(0.r + ~ r)) ≤ 0.r + ~ r0 A User Theorem
boundedge-def ⊦ bounded≥(rset) ↔ (∃ r0. r0 ≤ rset) An Axiom
inf-neg-sup ⊦ bounded≥(rset) → inf(rset) = ~ sup(λ r. rset(0.r + ~ r)) A User Theorem
sup-uniquebounded≤(rset), rset ≤ r0 ∧ (∀ r1. r1 < r0 → ¬ rset ≤ r1), rset ≤ r ∧ (∀ r1. r1 < r → ¬ rset ≤ r1) ⊦ r0 = r A User Theorem
boundedge-neg-boundedle ⊦ bounded≥(rset) ↔ bounded≤(λ r. rset(0.r + ~ r)) A User Theorem
inf-exists ⊦ ∀ rset. bounded≥(rset) → (∃ r0. r0 ≤ rset ∧ (∀ r1. r0 < r1 → ¬ r1 ≤ rset)) A User Theorem
sup-lowest-upperbound ⊦ bounded≤(rset) ∧ rset ≤ r → sup(rset) ≤ r An Axiom
inf-uniquebounded≥(rset), r0 ≤ rset ∧ (∀ r1. r0 < r1 → ¬ r1 ≤ rset), r ≤ rset ∧ (∀ r1. r < r1 → ¬ r1 ≤ rset) ⊦ r0 = r A User Theorem
upperbound-def ⊦ rset ≤ r0 ↔ (∀ r. rset(r) → r ≤ r0) An Axiom
sup-upperbound ⊦ bounded≤(rset) → rset ≤ sup(rset) An Axiom
inf-lowerbound ⊦ bounded≥(rset) → inf(rset) ≤ rset An Axiom
sup-exists ⊦ ∀ rset. bounded≤(rset) → (∃ r0. rset ≤ r0 ∧ (∀ r1. r1 < r0 → ¬ rset ≤ r1)) An Axiom