In mathematics, especially in the area of algebraic topology known as stable homotopy theory, the Adams filtration and the Adams–Novikov filtration allow a stable homotopy group to be understood as built from layers, the nth layer containing just those maps which require at most n auxiliary spaces in order to be a composition of homologically trivial maps. These filtrations, named after Frank Adams and Sergei Novikov, are of particular interest because the Adams (–Novikov) spectral sequence converges to them. (Wikipedia).

Gravity Filtration and Vacuum Filtration

The first laboratory technique that we will learn together is a very simple one, filtration. This is how we separate a mixture of liquids and solids. There are two common ways a chemist will perform filtration, those being gravity filtration and vacuum filtration. These are very easy to un

From playlist Chemistry Laboratory Techniques

Filtration | MIT Digital Lab Techniques Manual

Filtration The easiest way to separate a liquid from a solid? Filtration! Learn how to effectively carry out gravity and vacuum filtrations in this video. Created by Dr. Sarah Tabacco and Aaeyesha Siddiqui View the complete resource at: http://ocw.mit.edu/resources/res-5-0001-digital-la

From playlist MIT Digital Lab Techniques Manual

The Robinson Annulation is really neat, you guys. It's a Michael Addition followed by an intramolecular Aldol Condensation, and it makes a ring! Contain your excitement, you don't want a public disturbance violation. Watch the whole Organic Chemistry playlist: http://bit.ly/ProfDaveOrgChe

From playlist Organic Chemistry

Separation techniques are important in chemistry, and they won't always be as easy as filtration. Sometimes we need to separate two compounds that are dissolved in the same solution. Often we can take advantage of a difference in solubility or reactivity to perform an extraction. This is w

From playlist Chemistry Laboratory Techniques

Next in the series of olefination reactions is the Peterson olefination. This uses alpha-halo silanes and is quite fascinating, with a number of unique advantages. Namely, the stereochemistry of the alkene product can be controlled by using either acid or base. How does this work? Let's ta

From playlist Organic Chemistry

A rotating nozzle that can print with multiple different materials at the same time has been used to print helix shapes with intriguing properties. The researchers who developed the system have experimented with printing a kind of artificial muscle and with changing the properties a length

From playlist Technology

We know how to do acid-catalyzed hydration, which is a Markovnikov hydration, but there is another way to do this, one that does not result in carbocation rearrangement. Let's look at the mechanism and application of oxymercuration-demercuration. Watch the whole Organic Chemistry playlist

From playlist Organic Chemistry

What Are Reversible Reactions? | Reactions | Chemistry | FuseSchool

Learn about reversible reactions. Find out where you can find them and what they actually are. In this lesson, we will learn about reversible reactions. When we fry an egg, it is impossible to 'unfry' it. A lot of reactions work in the same way, once it is done, it is irreversible. A good

From playlist CHEMISTRY: Reactions

Dianel Isaksen - 3/3 Motivic and Equivariant Stable Homotopy Groups

Notes: https://nextcloud.ihes.fr/index.php/s/4N5kk6MNT5DMqfp I will discuss a program for computing C2-equivariant, ℝ-motivic, ℂ-motivic, and classical stable homotopy groups, emphasizing the connections and relationships between the four homotopical contexts. The Adams spectral sequence

From playlist Summer School 2020: Motivic, Equivariant and Non-commutative Homotopy Theory

Jeremy Hahn : Prismatic and syntomic cohomology of ring spectra

CONFERENCE Recording during the thematic meeting : « Chromatic Homotopy, K-Theory and Functors» the January 24, 2023 at the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Jean Petit Find this video and other talks given by worldwide mathematicians on CIR

From playlist Topology

Why Does Persistent Homology Work in Applications? [Adam Onus]

In this video I explain what it means for persistent homology to be stable under perturbations and noise, how to quantify this stability in terms of bottleneck and Wasserstein distances, and use this to answer the question of why persistent homology is a good tool to use in application. T

From playlist Tutorial-a-thon 2021 Fall

Facundo Mémoli: Vietoris-Rips Persistent Homology, Injective Metric Spaces, and The Filling Radius

Title: Vietoris-Rips Persistent Homology, Injective Metric Spaces, and The Filling Radius Abstract: The persistent homology induced by the Vietoris-Rips simplicial filtration is a standard method for capturing topological information from metric spaces. We consider a different, more geome

From playlist Vietoris-Rips Seminar

Making Adamantane From Jet Fuel

Visit https://brilliant.org/Chemiolis/ to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription. In this video I will be synthesizing jet fuel (JP-10) aka tetrahydrodicyclopentadiene and adamantane. Starting with purifying dicyclop

From playlist Interesting Molecular Structure

Adam Savage Tests the AIR Active Filtration Helmet!

Adam unboxes and performs a quick test of this novel new helmet designed to provide active air filtration while giving the user a wide field of view with its big plastic dome. It's evocative of a spacesuit helmet you're meant to wear around in the world, and Adam checks out how well it wor

From playlist Show and Tell

Stable Homotopy Seminar, 20: Computations with the Adams Spectral Sequence (Jacob Hegna)

Jacob Hegna walks us through some of the methods which have been used to compute the E_2 page of the Adams spectral sequence for the sphere, a.k.a. Ext_A(F_2, F_2), where A is the Steenrod algebra. The May spectral sequence works by filtering A and first computing Ext over the associated g

From playlist Stable Homotopy Seminar

Jose Perea (5/2/21): Quasiperiodicity and Persistent Kunneth Theorems

A signal is said to be quasiperiodic if its constitutive frequencies are linearly independent over the rationals. With appropriate parameters, the sliding window embedding of such a function can be shown to be dense in a torus of dimension equal to the number of independent frenquencies. I

From playlist TDA: Tutte Institute & Western University - 2021

Solution Chemistry and Net Ionic Equations

What are electrolytes? Yes, they're what plants crave. But they are also ionic solids dissociated in solution, such that they can conduct electrical current. Learn about solutions! Watch the whole General Chemistry playlist: http://bit.ly/ProfDaveGenChem More AP Chemistry review material

From playlist General Chemistry

Stable Homotopy Seminar, 21: Computing Homotopy Groups with the Adams Spectral Sequence (Zach Himes)

Zachary Himes constructs the May spectral sequence, a tool using a filtration of of the dual Steenrod algebra that calculates the E2 page of the Adams spectral sequence. May's original insight was that the associated graded of the dual Steenrod algebra is a primitively generated Hopf algeb

From playlist Stable Homotopy Seminar

Ling Zhou (8/30/21): Other Persistence Invariants: homotopy and the cohomology ring

In this work, we study both the notions of persistent homotopy groups and persistent cohomology rings. In the case of persistent homotopy, we pay particular attention to persistent fundamental groups for which we obtain a precise description via dendrograms, as a generalization of a simila

From playlist Beyond TDA - Persistent functions and its applications in data sciences, 2021

Chemical Reactions (3 of 11) Combustion Reactions, An Explanation

Describes the basics of combustion reactions, how to identify them, predict the products and balance the chemical equation. Three explosions are included, methane mamba, whoosh bottle and hydrogen gas balloon. A chemical reaction is a process that leads to the chemical change of one set o

From playlist Chemical Reactions and Stoichiometry