In mathematics, particularly in set theory, if is a regular uncountable cardinal then , the filter of all sets containing a club subset of , is a -complete filter closed under diagonal intersection called the club filter. To see that this is a filter, note that since it is thus both closed and unbounded (see club set). If then any subset of containing is also in , since , and therefore anything containing it, contains a club set. It is a -complete filter because the intersection of fewer than club sets is a club set. To see this, suppose is a sequence of club sets where . Obviously is closed, since any sequence which appears in appears in every , and therefore its limit is also in every . To show that it is unbounded, take some . Let be an increasing sequence with and for every . Such a sequence can be constructed, since every is unbounded. Since and is regular, the limit of this sequence is less than . We call it , and define a new sequence similar to the previous sequence. We can repeat this process, getting a sequence of sequences where each element of a sequence is greater than every member of the previous sequences. Then for each , is an increasing sequence contained in , and all these sequences have the same limit (the limit of ). This limit is then contained in every , and therefore , and is greater than . To see that is closed under diagonal intersection, let , be a sequence of club sets, and let . To show is closed, suppose and . Then for each , for all . Since each is closed, for all , so . To show is unbounded, let , and define a sequence , as follows: , and is the minimal element of such that . Such an element exists since by the above, the intersection of club sets is club. Then and , since it is in each with . (Wikipedia).
From playlist filter (less comfortable)
Introduction to Frequency Selective Filtering
http://AllSignalProcessing.com for free e-book on frequency relationships and more great signal processing content, including concept/screenshot files, quizzes, MATLAB and data files. Separation of signals based on frequency content using lowpass, highpass, bandpass, etc filters. Filter g
From playlist Introduction to Filter Design
More details visit: http://www.techtrixinfo.com/ The videos shows, how to fix an air filter inner and outer element. Please rate us and drop your comments. Air filter is one critical part of an engine. This is the unit which cleans the air which is sucked from the atmosphere to be suppl
From playlist Engines & its related stuffs.
For more information on Bloom Filters, check the Wikipedias: http://en.wikipedia.org/wiki/Bloom_filter , for special topics like "How to get around the 'no deletion' rule" and "How do I generate all of these different hash functions anyways?" For other questions, like "who taught you how
From playlist Software Development Lectures
Passive RC high pass filter tutorial!
A tutorial on passive RC high pass filters. You can use them to filter out low frequency signals, or remove DC offsets from a signal. Make sure you watch my video on low pass filters first! http://www.youtube.com/watch?v=OBM5T5_kgdI Webpage with more info on all kinds of electronic filters
From playlist Passive filters
From playlist Music.
2 Ways to Filter for a List of Items in Excel
Sign up for our Excel webinar, times added weekly: https://www.excelcampus.com/blueprint-registration/ Learn 2 ways to filter for a list of items in Excel. This video is a sample lesson from the Filters 101 Online Course. https://www.excelcampus.com/filters I explain 2 techniques for f
From playlist Formulas & Functions
Low Pass Filters and High Pass Filters - RC and RL Circuits
This electronics video tutorial discusses how resistors, capacitors, and inductors can be used to filter out signals according to their frequency. This video include examples such as RC low pass filters, RL low pass filters, RC high pass filters, and RL low pass filters. It provides the
From playlist Electronic Circuits
Gabriel Goldberg: The Jackson analysis and the strongest hypotheses
HYBRID EVENT Recorded during the meeting "XVI International Luminy Workshop in Set Theory" the September 13, 2021 by the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent Find this video and other talks given by worldwide mathematician
From playlist Logic and Foundations
Discrete Structures: Discrete Probability, part 1
Learn about discrete probability: decision trees, total probability, and Bayes' Rule. We'll introduce spam filters and lay the groundwork for how these vital tools work.
From playlist Discrete Structures, Spring 2022
Low Pass Filters & High Pass Filters : Data Science Concepts
What is a low pass filter? What is a high pass filter? Sobel Filter: https://en.wikipedia.org/wiki/Sobel_operator
From playlist Time Series Analysis
Golf League Differential Two Way Lookup In Excel 2368
Sean is calculating scores for a golf league. The Differential is Score minus Rating times 113 divided by the Slope. Given a course name and set of pins, he needs to lookup into a table to get the rating and slope. Download the workbook from: https://1drv.ms/x/s!As7G72Sl487JlgDFiXEYpMDi9TT
From playlist Power Query
What is Talend | Talend Tutorial for Beginners | Talend Online Training | Edureka
( Talend Training: https://www.edureka.co/talend-for-big-data ) This Edureka video on What Is Talend will give you the complete insights of What actually is Talend, its various products and how it is being used in the industry. This video helps you to learn following topics: 1. What Is Ta
From playlist Talend for Big Data Tutorial Videos
Complete SEO Course for Beginners: Learn to Rank #1 in Google
Learn how to do search engine optimization in our complete SEO training course for beginners. Subscribe ► https://www.youtube.com/AhrefsCom?sub_confirmation=1 *************************************** Additional SEO Resources SEO Course for Beginners Playlist (14 Videos) ► https://www.yo
From playlist Digital Marketing Courses for Beginners
A Breakdown of My Electrical Engineering College Labs
Support the Channel: https://www.patreon.com/zachstar PayPal(one time donation): https://www.paypal.me/ZachStarYT Follow me on Instagram: https://www.instagram.com/zachstar/ Twitter: https://twitter.com/ImZachStar In this video I take you through many of the electrical engineering labs I
From playlist Electrical Engineering
Keyword Research Pt. 2: How to Find Keywords for Your Website - 1.3. SEO Course by Ahrefs
In lesson 1.3 of our SEO basics course, you’ll learn how to find keywords for your website. *************************************** Additional SEO Resources [Playlist] SEO Course by Ahrefs ► https://www.youtube.com/watch?v=btwC4zmewss&list=PLvJ_dXFSpd2vk6rQ4Rta5MhDIRmakFbp6&index=1 Key
From playlist SEO Course for Beginners (by Ahrefs)
State of growth of Indian states by Debajit Jha
Program Summer Research Program on Dynamics of Complex Systems ORGANIZERS: Amit Apte, Soumitro Banerjee, Pranay Goel, Partha Guha, Neelima Gupte, Govindan Rangarajan and Somdatta Sinha DATE : 15 May 2019 to 12 July 2019 VENUE : Madhava hall for Summer School & Ramanujan hall f
From playlist Summer Research Program On Dynamics Of Complex Systems 2019
Ralf Schindler Universität Münster, Germany
From playlist Talks of Mathematics Münster's reseachers
Making Something from Nothing: Appropriate Technology as Intentionally Disruptive Responsibility
MIT RES.11-002 Intentional Public Disruptions: Art, Responsibility, and Pedagogy, Fall 2017 View the complete course: https://ocw.mit.edu/RES-11-002F17 Instructor: B. Stephen Carpenter II, Prof. Larry Susskind YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP63QSCvqM7qgvn
From playlist MIT RES.11-002 Intentional Public Disruptions: Art, Responsibility, and Pedagogy, Fall 2017
Passive RC low pass filter tutorial!
A tutorial on passive low pass RC filter circuits, and how they affect the frequency content of signals. An example of an RC filter that could go before a subwoofer's amplifier is given. The sound clips are from Pendulum's Slam in Hold Your Colour. More videos at http://www.afrotechmods.co
From playlist Passive filters