// Workers AI · dad joke modeWhat did the Hessian say? "I'm in a matrix.

A Hessian is an inhabitant of the German state of Hesse.

Hessian may also refer to:

Named from the toponym

• Hessian (soldier), eighteenth-century German regiments in service with the British Empire
  • Hessian (boot), a style of boot
  • Hessian fabric, coarse woven material
  • Hessian fly or barley midge, a species of fly (thought to be introduced by Hessian soldiers)
• Hessian dialects, West Central German group of dialects
• Hessian crucible, a type of ceramic crucible
• Hessian Cup, a regional cup competition in German football

Named for Otto Hesse

• Hessian matrix, in mathematics, is a matrix of second partial derivatives
  • Hessian affine region detector, a feature detector used in the fields of computer vision and image analysis
  • Hessian automatic differentiation
  • Hessian equations, partial differential equations (PDEs) based on the Hessian matrix
• Hessian pair or Hessian duad in mathematics
• Hessian form of an elliptic curve
• Hessian group
• Hessian polyhedron
• Glossary of classical algebraic geometry § Hessian, other mathematical objects called Hessian

Other uses

• Hessian (Web service protocol)
• The Hessian, a 1972 novel by Howard Fast

People with the name

• Patrick J. Hessian (1928–2007), United States Army officer
• Stephen Hessian (1891–1962), Canadian lawyer and political figure
• Toby Hessian (born 1969), British rower

See also

• All pages with titles beginning with Hessian