Stellar structure []

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The equations that describe a polytropic star structure are derived.
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Pulsating stars I: Differential equation []

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The differential equation of a radially pulsating star is derived.
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Pulsating stars II: Solutions at constant density []

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The differential equation for a radially pulsating star is solved
for a constant density.
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Pulsating stars III: Polytropic model []

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The solutions to the differential equation of a radially pulsating
star are presented for a polytropic model.
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