Quasi-delict¶

A civil-law category of nonintentional extra-contractual fault, especially negligence, that creates an obligation to repair damage despite the absence of a prior contract or wilful delict.

Version: v1 · 2026-09-08 · History
Domain-specific #: 6339
Origin domain: civil law
Subdomain: extra contractual liability

Core Idea¶

Quasi-delict is a civil-law term for an unlawful nonwilful act or omission that causes compensable harm outside contract, with scope varying by jurisdiction and historical code. A general duty of care or code provision combines fault, causation, and damage into an obligation to repair; vicarious, custodial, or thing-based responsibility may be allocated by additional code articles. The abstraction is therefore identified by a declared carrier, a transformation or constraint over that carrier, and an invariant that tells an analyst whether the named structure is genuinely present.

Scope of Application¶

Quasi-delict belongs to civil law and is useful where the analyst can specify a person owing a general legal duty, nonintentional fault or negligence, injury, causation, damage, defenses, and a civil-law jurisdiction's code, then evaluate the jurisdiction recognizes the category and its required duty or fault, causation, damage, extra-contractual setting, and defenses are satisfied. The scope is broad within that domain but bounded by the need for the jurisdiction recognizes the category and its required duty or fault, causation, damage, extra-contractual setting, and defenses are satisfied. The entry records a descriptive analytical identity; practical use requires the governing domain's evidence, standards, and safety obligations.

Clarity¶

The abstraction clarifies a crowded vocabulary by making the jurisdiction recognizes the category and its required duty or fault, causation, damage, extra-contractual setting, and defenses are satisfied the center of the account. A claim should name the carrier, the governing operation or relation, the applicable assumptions, and the recognition test. A bare label is insufficient because the name Quasi-delict can be used for a formal identity, an implementation, or a neighboring result unless carrier and convention are stated.

Manages Complexity¶

Without the abstraction, an analyst must reason directly over many local details: the carrier roles, admissibility assumptions, competing conventions, derived invariants, boundary cases, and proof or validation obligations specific to Quasi-delict. Quasi-delict compresses them into the roles in the structural signature. That compression permits comparison across instances without erasing the variables that determine validity. It also exposes which details may be varied safely and which are constitutive.

Abstract Reasoning¶

Identify the carrier. State what the elements, states, objects, or observations are: a person owing a general legal duty, nonintentional fault or negligence, injury, causation, damage, defenses, and a civil-law jurisdiction's code. Reject examples whose alleged carrier belongs to a different problem. 2. Lock the constitutive rule. Express the jurisdiction recognizes the category and its required duty or fault, causation, damage, extra-contractual setting, and defenses are satisfied independently of one notation or implementation.

Knowledge Transfer¶

Knowledge transfers strongly among subfields of civil law because they reuse a person owing a general legal duty, nonintentional fault or negligence, injury, causation, damage, defenses, and a civil-law jurisdiction's code, A general duty of care or code provision combines fault, causation, and damage into an obligation to repair; vicarious, custodial, or thing-based responsibility may be allocated by additional code articles., and type the carrier, state every parameter and convention in the definition, test that the jurisdiction recognizes the category and its required duty or fault, causation, damage, extra-contractual setting, and defenses are satisfied, compare the nearest accepted identity, and report counterexamples, uncertainty, and limiting cases.

Relationships to Other Abstractions¶

Current abstraction Quasi-delict Domain-specific

Parents (1) — more general patterns this builds on

Quasi-delict is a kind of Causality Prime

The proposed strict upward parent is prime:causality.

Hierarchy path (1) — routes to 1 parentless root

Quasi-delict → Causality → Dependency

Neighborhood in Abstraction Space¶

Quasi-delict sits in a moderately populated region (46^th percentile for distinctiveness): it has near-neighbors but no dense thicket of look-alikes.

Family — Rights, Liability & State Authority (28 abstractions)

Nearest neighbors

Computed from structural-signature embeddings · 2026-09-08