Although they will arrive quite quickly (each picture is between 10K and
35K), the pictures occupy rather a large area so you will have to use your
browser to scroll both vertically and horizontally. It may take your browser
a little while to format them.
Note: Where either the birth or death of a mathematician is unknown (mostly
for those in the era BC) the life-span is given as 60 years for the purpose
of these diagrams.