Sites

George Stokes (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Stokes.html
A short biography on the mathematician who created Stokes's theorem

Jean Fourier (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Fourier.html
A short biography on the man who invented the Fourier series and transforms.

Vito Volterra (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Volterra.html
A short biography on Volterra and his work in differential equations and mathematical physics.

Hermann Hankel (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Hankel.html
The mathematician who developed Hankel functions and the Hankel transform.

Charles Hermite (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Hermite.html
Includes a biography comparing him with other contemporaries of his, references and quotations.

Gustav Jacobi (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Jacobi.html
The mathematician whose work with coordinate transformations is still common in mathematical physics

Joseph Liouville (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Liouville.html
The mathematician who developed Sturm-Liouville differential equations.

Elie Cartan (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Cartan.html
Includes a brief biography and a reference list.

Greg Moore (Popularity: )
http://www.physics.rutgers.edu/~gmoore/
Rutgers University. Research on string theory and M-theory, with a particular emphasis on the underlying mathematical structures and applications to and from modern mathematics.

Jean Delambre (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Delambre.html
The mathematician who analysed the orbit of Uranus and predicted a possible extra planet.

Sophus Lie (Popularity: )
http://www.emis.de/journals/JLT/vol.9_no.1/1.html
A short history of the life and work of Sophus Lie, whose work, Lie groups, has applications in quantum mechanics in relativity.

Elie Cartan (Popularity: )
http://www22.pair.com/csdc/car/carfre2.htm
A brief biography of Cartan and exposition of his work in applied topology.

Charles-Francois Sturm (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Sturm.html
A biography of the Mathematican who worked on differential equations and created the form now call Sturm-Liouville equations.

Adrien-Marie Legendre (Popularity: )
http://www.stetson.edu/~efriedma/periodictable/html/Nd.html
Brief biography and summary of his works.

Edmond Laguerre (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Laguerre.html
Includes a brief biography and bibliography.

George Green (Popularity: )
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Green.html
A biography including quotations from his writings and contemporary articles.

Baez, John (Popularity: )
http://math.ucr.edu/home/baez/
University of California Riverside. Research interests: quantum gravity and n-categories. Regular column on "This Week's Finds in Mathematical Physics".

David Feinstein (Popularity: )
http://alumnus.caltech.edu/~dif/
Applications of mathematics to physics problems drawn from a career in industry.

Gomez-Gardeñes, Jesus (Popularity: )
http://neptuno.unizar.es/jgg/
University of Zaragoza. Publications, resources.

Nelson, Mark (Popularity: )
http://www.uow.edu.au/~mnelson/
University of Wollongong. Non-linear chemical dynamics.