delta.yaml

# SPDX-FileCopyrightText: Copyright (c) 2025 Objectionary.com
# SPDX-License-Identifier: MIT
---
name: delta
label: \Delta
match: ⟦𝐵1, Δ ⤍ 𝛿1, 𝐵2⟧
universe: 𝑒1
conclusion: 𝛿1
when:
  disjoint:
    - [λ]
    - [𝐵1, 𝐵2]