early life and career décio vieira de morais, known as décio vieira, was a brazilian concrete artist born in são paulo in 1916. he was one of the pioneers of concrete art in brazil, alongside other notable artists such as waldemar cordeiro, lothar charoux, and luiz sacilotto. vieira's work is characterized by its geometric shapes, clean lines, and vibrant colors, reflecting his interest in mathematics and the natural world. artistic st…