** Eunectes murinus, the green anaconda, the largest species, is found east of the Andes in Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil and on the island of Trinidad.

** Eunectes notaeus, the yellow anaconda, a smaller species, is found in eastern Bolivia, southern Brazil, Paraguay and northeastern Argentina.

** Eunectes deschauenseei, the dark-spotted anaconda, is a rare species found in northeastern Brazil and coastal French Guiana.

** Eunectes beniensis, the Bolivian anaconda, the most recently defined species, is found in the Departments of Beni and Pando in Bolivia.

** Tarski's theorem: For every infinite set A, there is a bijective map between the sets A and A × A.

** The Cartesian product of any family of nonempty sets is nonempty.

** König's theorem: Colloquially, the sum of a sequence of cardinals is strictly less than the product of a sequence of larger cardinals.

** Hausdorff maximal principle: In any partially ordered set, every totally ordered subset is contained in a maximal totally ordered subset.

** For every non-empty set S there is a binary operation defined on S that makes it a group.

** Tychonoff's theorem stating that every product of compact topological spaces is compact.

** In the product topology, the closure of a product of subsets is equal to the product of the closures.

** If S is a set of sentences of first-order logic and B is a consistent subset of S, then B is included in a set that is maximal among consistent subsets of S. The special case where S is the set of all first-order sentences in a given signature is weaker, equivalent to the Boolean prime ideal theorem ; see the section " Weaker forms " below.

** Any union of countably many countable sets is itself countable.

** If the set A is infinite, then there exists an injection from the natural numbers N to A ( see Dedekind infinite ).

** Every infinite game in which is a Borel subset of Baire space is determined.

** The Vitali theorem on the existence of non-measurable sets which states that there is a subset of the real numbers that is not Lebesgue measurable.

** The Lebesgue measure of a countable disjoint union of measurable sets is equal to the sum of the measures of the individual sets.

** The Nielsen – Schreier theorem, that every subgroup of a free group is free.

** Calorimetry – The study of heat changes in physical and chemical processes.

* Dynamics ( mechanics ), ** Aerodynamics, the study of gases in motion

** Fluid dynamics or hydrodynamics, the study of fluid flow

** Molecular dynamics, the study of motion on the molecular level

** System dynamics, the study of the behavior of complex systems

** Thermodynamics, the study of the relationships between heat and mechanical energy

** English studies, the study of English language and literature, often as a school subject

** Human-computer interaction ( security ), the study of how people interact with computers concerning information security

** Rigid body kinetics, the study of the motion of rigid bodies

** Enzyme kinetics, the study of biochemical reaction rates catalysed by an enzyme

** one of the humanities – academic discipline that study the human condition, using methods that are primarily analytical, critical, or speculative, as distinguished from the mainly empirical approaches of the natural sciences.

** Solar astronomy-the study of our Sun

** a third test prepared by each examining board based on the programmes of all the subjects of the last year of study

** Tolerance analysis, the study of accumulated variation in mechanical parts and assemblies

** 109. meitnerium, Mt, named after Lise Meitner, an Austrian physicist who was one of the earliest scientists to become involved in the study of nuclear fission ( 1982 ).

** Attack on Pearl Harbor: Japanese spy Takeo Yoshikawa arrives in Honolulu, Hawaii and begins to study the Pacific Fleet at Pearl Harbor.

** STS-45: Space Shuttle Atlantis takes off from Cape Canaveral carrying instruments designed to study global warming.

** STS-39: Space Shuttle Discovery lifts off from Cape Canaveral to study instruments related to the Strategic Defense Initiative.

** Pioneer 11 is launched on a mission to study the solar system.

** Eremorph – web based resource for prediction and study of gene variations

** Plant pathology – scientific study of plant diseases caused by pathogens ( infectious diseases ) and environmental conditions ( physiological factors ).

** The Wallace Lab and Muir Lab at the University of Florida in Gainesville, Florida focus on the molecular study of benign Schwann cell tumors and the development of new therapies for NF1.

** Stratification ( archeology ) where soil formation processes and preservative qualities can inform the study of archaeological sites

** NOAA / NWS Case study of 28 April 2002 tornado

** Stratigraphy, the study of geological ( or archaeological ) stratification and strata