Venice came to life on spongy mudflats at the edge of the habitable world. Protected in a tidal estuary from barbarian invaders and Byzantine overlords, the fishermen, salt gatherers, and traders who settled there crafted an amphibious way of life unlike anything the Roman Empire had ever known. In an astonishing feat of narrative history, James H. S. McGregor recreates this world-turned-upside-down, with its waterways rather than roads, its boats tethered alongside dwellings, and its livelihood harvested from the sea.
Today complex numbers have such widespread practical use--from electrical engineering to aeronautics--that few people would expect the story behind their derivation to be filled with adventure and enigma. In An Imaginary Tale, Paul Nahin tells the 2000-year-old history of one of mathematics' most elusive numbers, the square root of minus one, also known as i. He recreates the baffling mathematical problems that conjured it up, and the colorful characters who tried to solve them.
