In number theory, theorems are established propositions that are proven to be true based on previously accepted statements, such as axioms and previously proven theorems. Number theory itself is a branch of mathematics that deals with the properties and relationships of numbers, especially integers.

The term "Banach measure" is not a standard term in measure theory or functional analysis, but it might refer to several concepts that are associated with the work of mathematician Stefan Banach, especially concerning measures within vector spaces or more abstract settings. In a more specific context, "Banach measure" can refer to the concept of a measure defined on a Banach space, which is a complete normed vector space.

KCNQ5 is a gene that encodes a member of the potassium voltage-gated channel subfamily Q. The channels formed by KCNQ5 are involved in various physiological processes, including regulating the excitability of neurons and other types of cells. This specific potassium channel is known to contribute to the M-current, which is a slow, voltage-gated potassium current that helps stabilize the membrane potential and can influence the firing patterns of action potentials in neurons.

"Quadrics" can refer to a few different concepts depending on the context. Here are a few possible interpretations: 1. **Mathematics**: In mathematics, specifically in geometry, quadrics are surfaces defined by second-degree polynomial equations in three-dimensional space. Common examples include ellipsoids, hyperboloids, and paraboloids.

The ear canal, also known as the external auditory canal or external acoustic meatus, is a tubular structure that connects the outer ear to the middle ear. It plays a crucial role in the auditory system by directing sound waves from the external environment to the eardrum (tympanic membrane). The ear canal is typically about 2.5 centimeters (1 inch) long in adults and is lined with skin that contains glands that produce earwax (cerumen).

A functional shift, also known as a shift in grammatical function or part of speech shift, refers to the process in linguistics where a word changes its function (or part of speech) without any additional morphological change. This means that a word originally belonging to one grammatical category (like noun, verb, adjective, etc.) is used as a word from a different category.

A **Schreier vector** is a concept that arises in the context of group theory, particularly in the study of group actions and the construction of permutation representations of groups. The term is often associated with the use of the **Schreier graph** and can refer to a specific way of organizing cosets of a subgroup within a group.

Pseudoscientific physicists refer to individuals who claim to practice or speak about physics but whose ideas or theories lack empirical evidence, rigorous scientific methodology, or peer-reviewed validation. They may promote concepts that seem to be scientific but do not adhere to the established principles of the scientific method and are often not accepted by the mainstream scientific community.