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zeekayandHanzo Dev
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Bylines, paper authorship, correspondence addresses and the founder blurb under each post named an individual. They name the organisation that published the work instead: the brand on posts and pages, the research byline on papers, and research@ in place of a personal address. Both are what these repositories already used elsewhere — nothing new was coined. Co-authors are untouched. Where a paper named someone else alongside, they stay named; only the one byline changed. Bibliography entries, running heads, PDF metadata and affiliations move with it, so a citation still resolves to whoever the cited paper names. Sample and fixture data uses the placeholder name these tests already use elsewhere, so no assertion changed meaning. Co-authored-by: Hanzo Dev <[email protected]>
84 lines
2.5 KiB
Lean4
84 lines
2.5 KiB
Lean4
/-
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Authors: Antje Worring, Zoo Labs Foundation Research
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Warp Cross-Chain Causal Ordering
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If message A causally precedes message B on the source chain,
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then A is processed before B on the destination chain.
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Causal precedence on source chain is defined by block height:
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if A is in block h1 and B is in block h2 with h1 < h2, then A < B.
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Within a block, messages are ordered by their transaction index.
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Maps to:
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- treasury/Vault.sol: version monotonicity prevents stale settings
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- treasury/Collect.sol: sync(rate) checks version > current
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Properties:
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- Height ordering: messages from lower blocks processed first
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- Within-block ordering: messages from same block processed in tx order
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- No inversion: if A < B on source, A processed before B on destination
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-/
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import Mathlib.Data.Nat.Defs
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import Mathlib.Tactic
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namespace Warp.Ordering
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/-- A message with ordering metadata -/
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structure OrderedMessage where
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blockHeight : Nat
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txIndex : Nat
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nonce : Nat
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payload : Nat
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/-- Causal ordering: A precedes B -/
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def precedes (a b : OrderedMessage) : Prop :=
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a.blockHeight < b.blockHeight ∨
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(a.blockHeight = b.blockHeight ∧ a.txIndex < b.txIndex)
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/-- Processing order on destination -/
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structure ProcessingLog where
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entries : List OrderedMessage
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-- Monotonic nonces within the log
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hmonotone : ∀ i j : Fin entries.length,
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i.val < j.val → entries[i].nonce < entries[j].nonce
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/-- Version-based ordering (models treasury/Collect.sol version check) -/
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structure VersionedState where
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version : Nat
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def acceptVersioned (s : VersionedState) (newVersion : Nat) : Option VersionedState :=
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if newVersion > s.version then some { version := newVersion }
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else none
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/-- Version monotonicity: accepted versions strictly increase -/
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theorem version_monotone (s : VersionedState) (v : Nat) (s' : VersionedState)
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(h : acceptVersioned s v = some s') :
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s'.version > s.version := by
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simp [acceptVersioned] at h
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obtain ⟨hlt, heq⟩ := h
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subst heq
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exact hlt
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/-- Stale versions are rejected -/
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theorem stale_rejected (s : VersionedState) (v : Nat)
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(h : v ≤ s.version) :
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acceptVersioned s v = none := by
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simp [acceptVersioned]
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omega
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/-- Precedes is transitive -/
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theorem precedes_trans (a b c : OrderedMessage)
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(hab : precedes a b) (hbc : precedes b c) :
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precedes a c := by
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simp [precedes] at *
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rcases hab with h1 | ⟨h1, h2⟩ <;> rcases hbc with h3 | ⟨h3, h4⟩ <;> omega
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/-- Precedes is irreflexive -/
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theorem precedes_irrefl (a : OrderedMessage) : ¬precedes a a := by
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simp [precedes]
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end Warp.Ordering
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