In algebra, plethysm is an operation on symmetric functions introduced by Dudley E. Littlewood, who denoted it by {λ} ⊗ {μ}. The word "plethysm" for this operation (after the Greek word πληθυσμός meaning "multiplication") was introduced later by Littlewood , who said that the name was suggested by M. L. Clark. If symmetric functions are identified with operations in lambda rings, then plethysm corresponds to composition of operations. (Wikipedia).
Professor Poliakoff on a word that sounds familiar. This is the first in our new Chem Definition series - short videos about the language and jargon of chemistry.
From playlist Chem Definition - Periodic Videos
From playlist the absolute best of stereolab
Polymorphs can be a headache for people who make pharmaceuticals. Find out why? More chemistry at http://www.periodicvideos.com/
From playlist Chem Definition - Periodic Videos
What Are Allotropes of Metalloids and Metals | Properties of Matter | Chemistry | FuseSchool
What Are Allotropes of Metalloids and Metals Learn the basics about allotropes of metalloids and metals, as a part of the overall properties of matter topic. An allotrope is basically a different form of the same element, each with distinct physical and chemical properties. For example
From playlist CHEMISTRY
Special Relativity A1 The Postulates of Special Relativity
The postulates of special relativity.
From playlist Physics - Special Relativity
Sam and The Professor discuss what is meant by an "endothermic reaction". More chemistry at http://www.periodicvideos.com/
From playlist Chem Definition - Periodic Videos
Phylum Platyhelminthes Part 3: Parasitic Trematodes and Monogeneans
With the free-living platyhelminths covered, it's time to discuss the parasitic ones. First we will cover those within Trematoda and Monogenea, also known as flukes. These have fascinating life cycles, with separate intermediate and final hosts, and sometimes a paratenic host, and some of
From playlist Zoology
From playlist the absolute best of stereolab
From playlist the absolute best of stereolab
What are the names of different types of polygons based on the number of sides
👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which at least one of its interior angles is greater than 1
From playlist Classify Polygons