1. The Pythagoras' theorem in the hidden layer of Salvator Rosa's painting "Pythagoras and the Fisherman"
2. Salvator Rosa: Pythagoras Emerging from the Underworld. Astromythical analysis
3. The zodiac symbolism of Delacroix's painting "Christ on the Sea of Galilee"
4. The "zodiac" symbolism of Henri Matisse's painting "Nude (black and gold)"

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