In type theory, a branch of mathematical logic, in a given typed calculus, the type inhabitation problem for this calculus is the following problem: given a type and a typing environment , does there exist a -term M such that ? With an empty type environment, such an M is said to be an inhabitant of . (Wikipedia).
Types of Speciation: Allopatric, Sympatric, Peripatric, and Parapatric
Earlier in the series we learned about evolution by natural selection, and the production of new species, which we call speciation. But did you know there are different types of speciation? There are! That's because there are different mechanisms by which speciation can occur. What are the
From playlist Biology/Genetics
Types of Silicates Part 2: Inosilicates, Phyllosilicates, and Tectosilicates
In the previous tutorial we learned about some types of silicates, so now let's learn about the rest. That will be inosilicates, phyllosilicates, and tectosilicates. These can get pretty complicated so let's take a closer look! Script by Jared Matteucci and Bryne Hadnott Watch the whole
From playlist Geology
Key Ecology Terms | Ecology and Environment | Biology | FuseSchool
In this video we look at a few keys words that you will come across throughout ecology. An ecosystem is made up of all of the communities that live in it, every single organism from small to big and lots of environmental factors like sunlight and shade in the woodland, streams and other
From playlist BIOLOGY: Ecology & Environment
Types of Tissue Part 1: Epithelial Tissue
When learning about the structure of the human body, it's best to begin by learning about the types of tissues that are found within, since all of the organs are made of different combinations of these types of tissues. First up is epithelial tissue, since this makes up the outermost part
From playlist Anatomy & Physiology
4 Terrifying Parasites Found in Humans | What the Stuff?!
Parasites aren't just weird – some of them are downright frightening (and might be living inside you right now). 5 Rare Parasites Found in the Human Body http://health.howstuffworks.com/diseases-conditions/infectious/5-rare-parasites.htm What the Stuff?! episodes are available every Mond
From playlist Episodes hosted by Lauren
The Effects of Alien Life on Earth | Alien Encounters (Full Episode)
A mothership the size of Texas is hovering over Earth and we are tired of waiting. We send a rover to explore, and what we find makes us question the definition of life. On Earth, the pods multiply and get smaller, making contact with them unavoidable. Stream More Episodes of Alien Encoun
From playlist Full Episodes: Alien Encounters
Introduction to Virology and Viral Classification
There are two main types of pathogens we will be focusing on in this series. The first was bacteria, and we just wrapped up a good amount of information on those. The next is viruses. These little things are much tinier than bacteria, and they are so simple in structure that we technically
From playlist Microbiology/Infectious Diseases
Phylum Rotifera Part 1: General Characteristics
It's time to wrap up our study of Gnathifera, and this means investigating phylum Rotifera. These are the wheel animals, and we will need a few tutorials to get through them all. Some species are free-living and some are parasitic, and you've probably had some in your body, since they're p
From playlist Zoology
Category Theory 8.2: Type algebra, Curry-Howard-Lambek isomorphism
Type algebra, Curry-Howard-Lambek isomorphism
From playlist Category Theory
Mechanisms of Natural Selection Part 1: Types of Sexual Selection
We touched upon sexual selection when we learned about natural selection. Essentially when there is a variance in the reproductive success of a particular sex for a given species, secondary sex characteristics will develop in that species, because one sex has the opportunity to choose a ma
From playlist Biology/Genetics
Why should you learn Type Theory?
This video tries to be a brief introduction to Type Theory. I am sorry for the inaccuracies or potential errors. Feel free to tell me in the comments, I just started learning about this topic but I found it too amazing not to share. As you probably already can tell, this is my first video
From playlist Summer of Math Exposition Youtube Videos
The Blue-Eyes Logic Puzzle comes from xkcd.com, who got it from a guy named Joel. (NB: The inhabitants know all the rules of the puzzle.) ... [I wrote a book! https://amzn.to/3tI332x] Contents: 0:00 Preamble 0:20 Puzzle set up 1:52 Admonition 2:13 Solution 4:54 Bob's Yer Uncle
From playlist Famous Math Problems
The First Emperor's Home Base: Archaeological Perspectives on Ethnicity... - Lothar von Falkenhausen
The First Emperor's Home Base: Archaeological Perspectives on Ethnicity in Ancient China Lothar von Falkenhausen Professor of the History of Art University of California, Los Angeles October 22, 2010 Archaeologists working in China often correlate archaeological finds with ancient ethnic g
From playlist Historical Studies
Martin Hötzel Escardó: Constructive Mathematics in Univalent Type Theory (Lecture II)
The lecture was held within the framework of the Hausdorff Trimester Program: Types, Sets and Constructions
From playlist HIM Lectures: Trimester Program "Types, Sets and Constructions"
Benedikt Ahrens - Univalent Foundations and the UniMath library - IPAM at UCLA
Recorded 13 February 2023. Benedikt Ahrens of Delft University of Technology presents "Univalent Foundations and the UniMath library" at IPAM's Machine Assisted Proofs Workshop. Abstract: Univalent Foundations (UF) were designed by Voevodsky as a foundation of mathematics that is "invarian
From playlist 2023 Machine Assisted Proofs Workshop
EPISODE 8: Endor - Star Wars in Universe Sandbox 2
Consider supporting me on Patreon: https://www.patreon.com/user?u=2318196&ty=h Hello and welcome to the new series using Universe Sandbox 2 where we will investigate and recreate the Star Wars Galaxy using the game. In this eighth episode of Star Was with Universe Sandbox we will recreat
From playlist Universe Sandbox 2
LambdaConf 2015 - Parametricity The Essence of Information Hiding Kris Nuttycombe
This introductory talk is designed to help students new to functional programming understand how type parameters enable us to more easily reason about the behavior of functions and create APIs that enforce their invariants with type-level constraints. We will cover the principles of univer
From playlist LambdaConf 2015
http://www.teachastronomy.com/ There are two fundamentally different types of cells in life on Earth: prokaryotes and eukaryotes. The prokaryotes are cells without nuclei. They are ten times smaller then the eukaryotes, and they are far less complex in a chemical sense. Eukaryotes, whic
From playlist 25. Early Earth and Life Processes
Teach Astronomy - Morphology-Density Relation
http://www.teachastronomy.com/ Astronomers have discovered that the relative numbers of galaxies of different Hubble types depends on the overall density of the environment. This is called the morphology-density relation. In low density regions of the universe like the local group where
From playlist 20. Galaxy Interaction and Motion