physics/poisson-bracket-expand

Level

AuthoringFaithfulCorpusEquivFaithful, Corpus, and Equiv apply this rule.

Fidelity

renderPreserves rendering under the reference renderer.

Package

physics

Source

physics/faithful/commutator/poisson_bracket_expand.rs (opens in new tab)

Triggers

\pb command

Eliminates

\pb command

Produces

\left, \right commands

Rewrite patterns#

1. poisson-bracket-auto-sized\pb{#1}{#2}\left\{#1,#2\right\}
2. poisson-bracket-fixed-size\pb*{#1}{#2}\{#1,#2\}

Examples#

Each example shows this rule applied in isolation. A complete normalization profile may make additional changes.

\pb{q_i}{p_j}=\delta_{ij}

\left\{q_i,p_j\right\}=\delta_{ij}

\pb*{f}{g}=0

\{f,g\}=0

Related rules#

Same family#

• physics/expectation-expand Expand expectation-value helpers to explicit angle brackets.
• physics/matrixel-expand Expand matrix elements to explicit angle-bracket and bar fences.
• physics/physics-bra-expand Expand bra to an explicit angle-bracket and bar fence form.
• physics/physics-braket-expand Expand braket to an explicit angle-bracket form with a middle bar.
• physics/physics-ket-expand Expand ket to an explicit bar and angle-bracket fence form.
• physics/commutator-expand Expand commutators to explicit square-bracket fences.

Notes#

Covers the star branch, where star suppresses automatic fence sizing. Explicit big-size control after the command follows the shared commutator parser and is outside this rule's scope.

Disable this rule#

TransformEngine(profile="corpus", disable_rules=["physics/poisson-bracket-expand"])

new TransformEngine({ profile: 'corpus', disableRules: ['physics/poisson-bracket-expand'] })

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