Source-pinned research

Research proof index

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Project-declaredLean 4.32.0

Mass Metric Val cont MDiff

ClassicalMechanics.HarmonicOscillator.massMetricVal_contMDiff

Plain-language statement

The oscillator mass metric is constant in the global tangent-bundle chart.

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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Project-declaredLean 4.32.0

Mass Metric Val is Von NBounded

ClassicalMechanics.HarmonicOscillator.massMetricVal_isVonNBounded

Plain-language statement

The mass metric unit ball is bounded in the model norm.

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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Project-declaredLean 4.32.0

Rotational Kinetic Energy eq integral

RigidBody.rotationalKineticEnergy_eq_integral

Plain-language statement

The rotational kinetic energy equals the mass integral of the local rotational speed squared: T = ½ ∫ |ω × r|² dm.

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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Project-declaredLean 4.32.0

Kinetic Energy eq translational add body Angular Velocity

RigidBodyMotion.kineticEnergy_eq_translational_add_bodyAngularVelocity

Project documentation

König's theorem in the body frame. The total kinetic energy M.kineticEnergy t, formed from the lab-frame point velocities, splits at the centre of mass (centerOfMass = 0) as T = ½ M ⟪V, V⟫ + rotationalKineticEnergy ω_body. The rotational energy is a frame-independent scalar, so it is evaluated here from the body-frame angular velocity ω_body...

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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Project-declaredLean 4.32.0

Kinetic Energy integrand split

RigidBodyMotion.kineticEnergy_integrand_split

Plain-language statement

The squared-speed integrand of kineticEnergy splits into the squared rotational speed |Ṙ (y − c)|², a term linear in the body-frame coordinate y − c, and the constant squared centre-of-mass speed ⟪V, V⟫.

physicsquantum field theoryrelativity

Source project: Physlib

Person-level attribution pending.

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