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Everything about Sequent calculus

Style of formal logical argumentation

In mathematical logic, sequent calculus is a style of formal logical argumentation in which every line of a proof is a conditional tautology instead of an unconditional tautology. Each conditional tautology is inferred from other conditional tautologies on earlier lines in a formal argument according to rules and procedures of inference, giving a better approximation to the natural style of deduction used by mathematicians than David Hilbert's earlier style of formal logic, in which every line was an unconditional tautology. More subtle distinctions may exist; for example, propositions may implicitly depend upon non-logical axioms. In that case, sequents signify conditional theorems of a first-order theory rather than conditional tautologies. Wikipedia →

đź§­ Start here: a 6-step reading path

  1. Read the overview: Sequent calculusA 5-minute orientation
  2. Skim a recent paper: Cascade laser optimization for 3 H 4 → 3 H 5 and 3 F 4 → 3 H 6 sequent transitions in Tm 3+ -doped materialsInfluential work since 2022
  3. Pick up a classic book: Guide to parallel programming on Sequent computer systemsThe most-reprinted book on the subject
  4. Read the landmark paper: Precipitation of heavy metals from wastewater using simulated flue gas: Sequent additions of fly ash, lime and carbon dioxideCited 385 times
  5. Go sideways: SequentA closely related topic
  6. Go sideways: Natural deductionA closely related topic

đź“– Definitions

Adjective That comes after in time or order; subsequent.

Adjective That follows on as a result, conclusion etc.; consequent to, on, upon.

Adjective Recurring in succession or as a series; successive, consecutive.

Noun Something that follows in a given sequence.

🗂️ The subject at a glance

  1. Overview
  2. Proving logical formulas
  3. The system LK
  4. Variants

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

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