Mathematics

• Trace (linear algebra)
  Trace (linear algebra)
  In linear algebra, the trace of an n-by-n square matrix A is defined to be the sum of the elements on the main diagonal of A, i.e.,...
  
  , of a square matrix or a linear transformation
• Trace class
  Trace class
  In mathematics, a trace class operator is a compact operator for which a trace may be defined, such that the trace is finite and independent of the choice of basis....
  
  , a certain set of operators in a Hilbert space
• Trace operator
  Trace operator
  In mathematics, the concept of trace operator plays an important role in studying the existence and uniqueness of solutions to boundary value problems, that is, to partial differential equations with prescribed boundary conditions...
  
  , a restriction-to-boundary operator in a Sobolev space
• Field trace
  Field trace
  In mathematics, the field trace is a function defined with respect to a finite field extension L/K. It is a K-linear map from L to K...
  
  , in field theory
• Traces, the equivalence classes of strings of a trace monoid
  Trace monoid
  In mathematics and computer science, a trace is a set of strings, wherein certain letters in the string are allowed to commute, but others are not. It generalizes the concept of a string, by not forcing the letters to always be in a fixed order, but allowing certain reshufflings to take place...
  
  , studied in trace theories of concurrent computation

Computer science and electronics

• Signal trace, a printed or etched wire on a printed circuit board
• Stack trace
  Stack trace
  A stack trace is a report of the active stack frames at a certain point in time during the execution of a program.It is commonly used during interactive and post-mortem debugging...
  
  , report of the active steps of a computer program's execution
• Digital traces, the traces of activities and behaviours that people leave when they interact in digital environments
• Software trace, a list of a computer program's past execution steps, recorded by the process of tracing
  Tracing (software)
  In software engineering, tracing is a specialized use of logging to record information about a program's execution. This information is typically used by programmers for debugging purposes, and additionally, depending on the type and detail of information contained in a trace log, by experienced...
  
  
• Packet trace, a timestamped sequence of packets captured on a computer network with a sniffer or similar tools

Physical sciences

• Trace radioisotope
  Trace radioisotope
  A trace radioisotope is a radioisotope that occurs naturally in trace amounts . Generally speaking, trace radioisotopes have half-lives that are short in comparison to the age of the earth, since primordial nuclides tend to occur in larger than trace amounts...
  
  , an element that is found in small quantities because it undergoes radioactive decay
• Trace evidence
  Trace evidence
  Trace evidence is evidence that occurs when different objects contact one another. Such materials are often transferred by heat induced by contact friction....
  
  , material found at a crime scene
• Trace element
  Trace element
  In analytical chemistry, a trace element is an element in a sample that has an average concentration of less than 100 parts per million measured in atomic count, or less than 100 micrograms per gram....
  
  , in geochemistry, an element which composes less than 0.1% of a sample
• TRACE
  TRACE
  TRACE was a NASA space telescope designed to investigate the connections between fine-scale magnetic fields and the associated plasma structures on the Sun by providing high resolution images and observation of the solar photosphere and transition region to the corona...
  
   (Transition Region and Coronal Explorer), a NASA satellite
• Trace fossil
  Trace fossil
  Trace fossils, also called ichnofossils , are geological records of biological activity. Trace fossils may be impressions made on the substrate by an organism: for example, burrows, borings , urolites , footprints and feeding marks, and root cavities...
  
  , fossil record of biological activity

Language

• Trace (semiology)
  Trace (semiology)
  The trace in semiotics is a concept developed by Jacques Derrida in Writing and Difference to denote the history that a sign carries with it as the result of its use through time. Words like "black", for example, carry the trace of all their previous uses with them, making them sensitive, loaded...
  
  , the history carried by a sign
• Trace (linguistics)
  Trace (linguistics)
  In transformational grammar, a trace is an empty category that occupies a position in the syntactic structure. In some theories of syntax, traces are used in the account of constructions such as wh-movement and passive....
  
  , a syntactic placeholder resulting from a transformation
• Trace (deconstruction)
  Trace (Deconstruction)
  Trace is one of the most important concepts in Derridian Deconstruction. In the 1960s, Derrida used this word in two of his early books, namely “Writing and Difference” and “Of Grammatology”...
  
  , a concept in Derridian Deconstruction
• TRACE (psycholinguistics)
  Trace (psycholinguistics)
  TRACE is a connectionist model of speech perception, proposed by James McClelland and Jeffrey Elman in 1986. TRACE was made into a working computer program for running perceptual simulations...
  
  , a psycholinguistic model of speech perception

Entertainment

• Trace (album)
  Trace (album)
  Trace is the first album by Son Volt, released in 1995. The band was formed the previous year by Jay Farrar after the breakup of the influential alt-country band Uncle Tupelo. The album reached #166 on the Billboard 200 album chart and received extremely favorable reviews...
  
  , a 1995 album by alt-country band Son Volt
• Trace (novel)
  Trace (novel)
  Trace is a crime fiction novel by Patricia Cornwell.-Plot introduction:Trace is the thirteenth book of the Dr. Kay Scarpetta series by author Patricia Cornwell.-Plot summary:...
  
  , by Patricia Cornwell
• Trace (band)
  Trace (band)
  Trace is a Dutch progressive rock band founded by Rick van der Linden after leaving Ekseption.- History :In 1973 after releasing their album entitled Trinity, the members of the band Ekseption asked Rick van der Linden to leave the band...
  
  , a Dutch progressive rock band
• Trace (artist)
  Trace (artist)
  DJ Trace is the recording name of Duncan Hutchinson, a British electronic music artist, disc jockey and founder of DSCI4 Records. Hutchinson's remix of T Power & MK Ultra's Mutant Jazz, entitled simply The Mutant Remix and released on the Rollers Instinct record label in 1995 is said to be one of...
  
  , a UK drum and bass artist
• Trace (magazine)
  Trace (magazine)
  TRACE is a quarterly, internationally-distributed magazine with the tagline, 'transcultural styles + ideas'. It focuses on urban culture, and has featured on its cover some of the most significant black artists and models of the last decade, including Snoop Dogg, Mary J. Blige, Biggie Smalls,...
  
  , British hip-hop magazine
• Trace TV
  Trace TV
  Trace Urban is a French music video television network devoted to play urban contemporary music videos, founded by the French businessmen Olivier Laouchez and Claude Grunitzky....
  
  , a french music video television channel
• Trace (webtoon)
  Trace (webtoon)
  The Trace is a South Korean webcomic series written and illustrated by manhwa artist Go Yeong-hun or known as his pen name, "Nasty Cat". Envy, jealousy, and selfishness, such dark sides of humans can be seen in the work...
  
   a Korean internet cartoon
• Trace, another name for Portgas D. Ace, a fictional character in the manga One Piece
• Trace, a fictional character in the game Metroid Prime Hunters
  Metroid Prime Hunters
  Metroid Prime Hunters is a first-person shooter and adventure game for the Nintendo DS handheld video game console. It was developed by American video game developers Nintendo Software Technology, and was released by Nintendo in North America in March 2006, in Europe and Australia in May 2006, and...
  
  

Other

• A synonym for trail
  Trail
  A trail is a path with a rough beaten or dirt/stone surface used for travel. Trails may be for use only by walkers and in some places are the main access route to remote settlements...
  
  , as in Natchez Trace
• Trace (tack)
  Trace (tack)
  In transport, a trace is one of two, or more, straps, ropes or chains by which a carriage or wagon, or the like, is drawn by a harness horse or other draught animal. The once popular idiom: "kick over the traces" comes from a frisky animal kicking one or both feet outside a trace...
  
  , part of a draft animal's gear
• Track and trace, in goods distribution and logistics
• Trace, a type of eyeblink conditioning
  Eyeblink conditioning
  Eyeblink conditioning is a form of classical conditioning that has been used extensively to study neural structures and mechanisms that underlie learning and memory. The procedure is relatively simple and usually consists of pairing an auditory or visual stimulus with an eyeblink-eliciting...
  
  
• An Italian-derived synonym for star fort
  Star fort
  A star fort, or trace italienne, is a fortification in the style that evolved during the age of gunpowder, when cannon came to dominate the battlefield, and was first seen in the mid-15th century in Italy....
  
  , in fortification