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The cosmic scales
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FRW metrics and Friedman eqs
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The sources of expansion
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Expansion laws and horizons
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Phase transitions & entropy evolution
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Dark Matter: why
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Dark Energy: why
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The LCDM model
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The Jeans scale.
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Fluctuation evolution in the linear limit Non relativistic and relativistic
regimes The primordial spectrum Meszaros effect and the transfer function
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Post-linear fluctuation evolution
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Evolution of a spherical overdensity
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Density contrasts for clusters and galaxies The Press & Schecther approach
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The Zel'dovich approximation