podobiektem

Podobiektem is the instrumental singular form of the Polish noun podobiekt, a term used primarily in mathematics, logic, and computer science to denote a subobject or an object closely related to another by a substructure or analogous relation. The base noun podobiekt is formed from obiekt (object) with the prefix pod-, indicating a relation of being beneath, within, or as a part of something larger. In Polish technical writing, podobiekt is used to discuss parts of a structure or a secondary object within a larger system; accordingly, podobiektem appears when the word is used in the instrumental case, such as in phrases describing means, tools, or ways involving a subobject.

In mathematics and logic, podobiekt commonly refers to a subobject—a structure that embeds into a larger object via a monomorphism or inclusion map. This usage spans areas such as set theory, category theory, model theory, and related disciplines, where subobjects represent parts of a whole that preserve relevant structure. In computer science and related fields, the term can describe components or modules that function as substructures within a broader data type or system.

Grammatically, podobiektem is encountered in sentences that require the instrumental case, for example with verbs that denote using or handling something as an instrument. It is distinct from the nominative podobiekt and from the related noun obiekt (object) in both meaning and case usage.

See also: obiekt, podobiekt (subobject), subobject (category theory).