Definitions from Wordnet 2.0

• several exercises intended to be done in series; "he did four sets of the incline bench press"
• the act of putting something in position; "he gave a final set to his hat"
• any electronic equipment that receives or transmits radio or tv signals; "the early sets ran on storage batteries"
• representation consisting of the scenery and other properties used to identify the location of a dramatic production; "the sets were meticulously authentic"
• (psychology) a temporary readiness to respond in a particular way; "the subjects'' set led them to solve problems the familiar way and to overlook the simpler solution"; "his instructions deliberately gave them the wrong set"
• a relatively permanent inclination to react in a particular way; "the set of his mind was obvious"
• the descent of a heavenly body below the horizon; "before the set of sun"
• a group of things of the same kind that belong together and are so used; "a set of books"; "a set of golf clubs"; "a set of teeth"
• (mathematics) an abstract collection of numbers or symbols; "the set of prime numbers is infinite"
• an unofficial association of people or groups; "the smart set goes there"; "they were an angry lot"
• evil beast-headed Egyptian god with high square ears and a long snout; brother and murderer of Osiris
• the process of becoming hard or solid by cooling or drying or crystallization; "the hardening of concrete"; "he tested the set of the glue"
• a unit of play in tennis or squash; "they played two sets of tennis after dinner"
• arrange attractively; "dress my hair for the wedding"
• bear fruit; "the apple trees fructify"
• alter or regulate so as to achieve accuracy or conform to a standard; "Adjust the clock, please"; "correct the alignment of the front wheels"
• set to a certain position or cause to operate correctly; "set clocks or instruments"
• put into a certain state; cause to be in a certain state; "set the house afire"
• make ready or suitable or equip in advance for a particular purpose or for some use, event, etc; "Get the children ready for school!"; "prepare for war"; "I was fixing to leave town after I paid the hotel bill"
• get ready for a particular purpose or event; "set up an experiment"; "set the table"; "lay out the tools for the surgery"
• equip with sails, masts, etc.; "rig a ship"
• become gelatinous; "the liquid jelled after we added the enzyme"
• estimate; "We put the time of arrival at 8 P.M."
• fix conclusively or authoritatively; "set the rules"
• decide upon or fix definitely; "fix the variables"; "specify the parameters"
• establish as the highest level or best performance; "set a record"
• urge a dog to attack someone
• give a fine, sharp edge to a knife or razor
• put into a certain place or abstract location; "Put your things here"; "Set the tray down"; "Set the dogs on the scent of the missing children"; "Place emphasis on a certain point"
• insert (a nail or screw below the surface, as into a countersink)
• put or set (seeds or seedlings) into the ground; "Let''s plant flowers in the garden"
• fix in a border; "The goldsmith set the diamond"
• put into a position that will restore a normal state; "set a broken bone"
• apply or start; "set fire to a building"
• adapt for performance in a different way; "set this poem to music"
• locate; "The film is set in Africa"
• disappear beyond the horizon; "the sun sets early these days"
• converted to solid form (as concrete)
• fixed and unmoving; "with eyes set in a fixed glassy stare"; "his bearded face already has a set hollow look"- Connor Cruise O''Brien; "a face rigid with pain"
• set down according to a plan:"a carefully laid table with places set for four people"; "stones laid in a pattern"
• situated in a particular spot or position; "valuable centrally located urban land"; "strategically placed artillery"; "a house set on a hilltop"; "nicely situated on a quiet riverbank"
• determined or decided upon as by an authority; "date and place are already determined"; "the dictated terms of surrender"; "the time set for the launching"

Definitions from Wiktionary

• a group of things of the same kind that belong together and are so used; "a set of books"; "a set of golf clubs"; "a set of teeth" ,
• (mathematics) an abstract collection of numbers or symbols; "the set of prime numbers is infinite" ,
• several exercises intended to be done in series; "he did four sets of the incline bench press" ,
• representation consisting of the scenery and other properties used to identify the location of a dramatic production; "the sets were meticulously authentic" ,
• an unofficial association of people or groups; "the smart set goes there"; "they were an angry lot" ,
• a relatively permanent inclination to react in a particular way; "the set of his mind was obvious" ,
• the act of putting something in position; "he gave a final set to his hat" ,
• a unit of play in tennis or squash; "they played two sets of tennis after dinner" ,
• the process of becoming hard or solid by cooling or drying or crystallization; "the hardening of concrete"; "he tested the set of the glue" , 10. evil Egyptian god with the head of a beast that has high square ears and a long snout; brother and murderer of Osiris , 1
• the descent of a heavenly body below the horizon; "before the set of sun" , 1
• (psychology) being temporarily ready to respond in a particular way; "the subjects' set led them to solve problems the familiar way and to overlook the simpler solution"; "his instructions deliberately gave them the wrong set" , 1
• any electronic equipment that receives or transmits radio or tv signals; "the early sets ran on storage batteries"

A set is an idea from mathematics. A set can hold zero or more things. A set cannot hold a particular item more than once: either that item is in the set or it is not. Multisets or bags are like sets in quite a few ways but can hold a certain type of item more than once.

Most mathematicians use uppercase italic (usually Roman) letters to write about sets. The things that are seen as elements of sets are usually written with lowercase Roman letters.

Usually, when things are put into a bag, all the things that are put in have something in common. If someone else needs to get the same set, there are different options on how to tell them:

Various things can be put into a bag. Later on, a valid question would be if a certain thing is in the bag. Mathematicians call this element of. Something is an element of a set, if that thing can be found in the respective bag. The symbol used for this is

• Meaning: Myth name (son of Seb and Nut)
• Origin: Egyptian
• Gender: Male

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