#equation

• Adequational — Pertaining to adequacy, relating to adequacy, or based on the principle of conformity and exact correspondence between intellect and reality. In modern theories of truth, it describes a model or methodological approach focused on verifying the structural alignment between logical statements and external states of affairs.
• Dimensionless — Having no physical dimension, or whose fundamental units of measurement cancel each other out through ratio, being expressed as a pure number without an associated unit of measurement; in physics and mechanics, it describes a structural quantity (such as the Reynolds number or friction coefficient) obtained via dimensional analysis to simplify mathematical equations and allow scaled modeling of complex phenomena.
• Algebra — A foundational branch of mathematics that studies arithmetic operations and structural relations by generalizing the properties of numbers using symbols, letters, and variables. Broadly, it designates the study of abstract structures and polynomial equations.
• Algebraic — Pertaining to algebra; based on or utilizing the principles, rules, or operations of algebra. In mathematics, the term characterizes structures, equations, numbers, or varieties expressed through polynomials and finite arithmetic operations, standing in opposition to transcendental elements.
• Algebraically — Algebraically; from an algebraic standpoint or by utilizing methods, rules, and operations specific to algebra. In mathematical problem-solving, it describes finding a solution via equations or symbolic calculus, standing in direct contrast to geometric or graphic approaches.
• To algebraize — To transpose a problem, statement, geometric structure, or scientific theory into algebraic language; to express through equations, polynomials, and abstract symbols specific to algebra. In mathematical epistemology, it refers to the process of structural formalization.
• Analemma — The elongated figure-eight curve (or asymmetric infinity symbol) plotted on a diagram or terrestrial globe, obtained by photographing the Sun successively throughout a calendar year at the exact same hour and from the same fixed physical location. This structural visual phenomenon is the direct result of the axial tilt of the Earth combined with the eccentricity of its elliptical orbit around the Sun, historically used in gnomonics for calibrating sundials and calculating the equation of time.
• Andrade — A surname of Galician-Portuguese origin, widespread throughout the Ibero-American world and recognized globally in academia due to prestigious historical and scientific figures (such as physicist Edward Andrade or writer Mário de Andrade). In the context of technical and physics terminology, the name is directly associated with the Andrade equation for liquid viscosity or structural studies on the plastic deformation of metals.
• Arrhenius — A famous surname in universal scientific history, notably borne by the renowned Swedish physicist and chemist Svante Arrhenius (1859–1927), a Nobel laureate and one of the founders of modern physical chemistry. The name is closely linked to the Arrhenius equation, the theory of electrolytic dissociation, chemical kinetics study, and early mathematical models regarding the global greenhouse effect.
• Astroid — A remarkable plane curve with four sharp cusps, resembling a four-pointed star, generated by the trajectory of a fixed point on the circumference of a circle that rolls without slipping inside another fixed circle with a radius four times larger (a particular hypocycloid). Algebraically, its implicit Cartesian equation is x^(2/3) + y^(2/3) = a^(2/3), being extensively studied in analytical geometry due to its remarkable properties related to the envelope of a line segment of constant length.