MathTime is a commercial set of Times

Times Roman

Times New Roman is a serif typeface commissioned by the British newspaper The Times in 1931, created by Victor Lardent at the English branch of Monotype. It was commissioned after Stanley Morison had written an article criticizing The Times for being badly printed and typographically antiquated...

 compatible mathematical type family

Typeface

In typography, a typeface is the artistic representation or interpretation of characters; it is the way the type looks. Each type is designed and there are thousands of different typefaces in existence, with new ones being developed constantly....

 for TeX

TeX

TeX is a typesetting system designed and mostly written by Donald Knuth and released in 1978. Within the typesetting system, its name is formatted as ....

, created by Michael Spivak

Michael Spivak

Michael David Spivak is a mathematician specializing in differential geometry, an expositor of mathematics, and the founder of Publish-or-Perish Press. He is the author of the five-volume Comprehensive Introduction to Differential Geometry. He received a Ph.D...

. Used together with Times, it is one of the few typefaces that provide full-featured text and mathematical typesetting

Typesetting

Typesetting is the composition of text by means of types.Typesetting requires the prior process of designing a font and storing it in some manner...

 within TeX.

MathTime has been available in three variants:

• MathTime 1.x: contains the Times compatible TeX math italic
  Italic type
  In typography, italic type is a cursive typeface based on a stylized form of calligraphic handwriting. Owing to the influence from calligraphy, such typefaces often slant slightly to the right. Different glyph shapes from roman type are also usually used—another influence from calligraphy...
  
  , math symbol and math extension font.
• MathTime Plus: contains the Times compatible TeX math italic, math symbol and math extension font in bold and "heavy" (extra bold), used in addition to MathTime 1.x.
• MathTime Professional 2: A redesigned, optical scaling (matching the 9 or 10 pt
  Point (typography)
  In typography, a point is the smallest unit of measure, being a subdivision of the larger pica. It is commonly abbreviated as pt. The point has long been the usual unit for measuring font size and leading and other minute items on a printed page....
  
   Times Ten, 7 pt Times Seven, and 5½ pt Times Small Text) version free of license restriction by Monotype Corporation
  Monotype Corporation
  Monotype Imaging Holdings is a Delaware corporation based in Woburn, Massachusetts and specializing in typesetting and typeface design as well as text and imaging solutions for use with consumer electronics devices. Monotype Imaging Holdings is the owner of Monotype Imaging Inc., Linotype,...
  
  , and includes (in addition to the variants from 1.x/Plus) the AMS
  American Mathematical Society
  The American Mathematical Society is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, which it does with various publications and conferences as well as annual monetary awards and prizes to mathematicians.The society is one of the...
  
   symbols, upright script
  Script (typefaces)
  Script typefaces are based upon the varied and often fluid stroke created by handwriting. They are organized into highly regular formal types similar to cursive writing and looser, more casual scripts.- Formal scripts :...
  
  , (sans-serif
  Sans-serif
  In typography, a sans-serif, sans serif or san serif typeface is one that does not have the small projecting features called "serifs" at the end of strokes. The term comes from the French word sans, meaning "without"....
  
  ) blackboard bold
  Blackboard bold
  Blackboard bold is a typeface style that is often used for certain symbols in mathematical texts, in which certain lines of the symbol are doubled. The symbols usually denote number sets...
  
   and "holey Roman" (serif
  Serif
  In typography, serifs are semi-structural details on the ends of some of the strokes that make up letters and symbols. A typeface with serifs is called a serif typeface . A typeface without serifs is called sans serif or sans-serif, from the French sans, meaning “without”...
  
  ed blackboard bold) math fonts, and extra large operators
  Operation (mathematics)
  The general operation as explained on this page should not be confused with the more specific operators on vector spaces. For a notion in elementary mathematics, see arithmetic operation....
  
  .

MathTime 1.x and MathTime Plus was sold by (the now defunct) Y&Y, while MathTime Professional 2 is marketed by PCTeX. MathTime has been widely adopted by academic publishers

Academic publishing

Academic publishing describes the subfield of publishing which distributes academic research and scholarship. Most academic work is published in journal article, book or thesis form. The part of academic written output that is not formally published but merely printed up or posted is often called...

 such as by Elsevier

Elsevier

Elsevier is a publishing company which publishes medical and scientific literature. It is a part of the Reed Elsevier group. Based in Amsterdam, the company has operations in the United Kingdom, USA and elsewhere....

, American Physical Society

American Physical Society

The American Physical Society is the world's second largest organization of physicists, behind the Deutsche Physikalische Gesellschaft. The Society publishes more than a dozen scientific journals, including the world renowned Physical Review and Physical Review Letters, and organizes more than 20...

, and Springer

Springer Science+Business Media

- Selected publications :* Encyclopaedia of Mathematics* Ergebnisse der Mathematik und ihrer Grenzgebiete * Graduate Texts in Mathematics * Grothendieck's Séminaire de géométrie algébrique...

.

Similar typefaces

• TrueTeX's Belleek is a metrically identical (but significantly different in shape) free replacement font for MathTime 1.x.

• MicroPress' (also commercial) TM Math and the related (free) STIX fonts are similar in scope.