Trees that grow from seeds start out as tiny seedlings, usually growing directly under the parent tree--the tree that dropped its seeds. Often, those seedlings die because they are blocked from receiving sunlight and moisture. However, seedlings raised in nurseries usually do very well, depending on the species of tree.
Italian Renaissance painters and architects including Filippo Brunelleschi, Masaccio, Paolo Uccello, Piero della Francesca and Luca Pacioli studied linear perspective, wrote treatises on it, and incorporated it into their artworks, thus contributing to the mathematics of art.
discussed in biography. in Joan MirÃ³: Paris and early work. ...the linear configurations and patches of colour look almost as though they were set down randomly, as in The Policeman (1925). In paintings such as Dog Barking at the Moon (1926), he rendered figures of animals and humans as indeterminate forms. MirÃ³ signed the manifesto of the Surrealist movement in 1924, and the members of the group respected him for the way he portrayed the realm of unconscious experience.