Category theory

Filtered category

In category theory, filtered categories generalize the notion of directed set understood as a category (hence called a directed category; while some use directed category as a synonym for a filtered category). There is a dual notion of cofiltered category, which will be recalled below. (Wikipedia).

Video thumbnail

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

Video thumbnail

reaLD 3D glasses filter with a linear polarising filter

This is for a post on my blog: http://blog.stevemould.com

From playlist Everything in chronological order

Video thumbnail

Discrete noise filters

I discuss causal and non-causal noise filters: the moving average filter and the exponentially weighted moving average. I show how to do this filtering in Excel and Python

From playlist Discrete

Video thumbnail

Can you identify this substance?

via YouTube Capture

From playlist Random

Video thumbnail

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

Video thumbnail

Higher Algebra 5: Slices and filtered colimits

In this video, we provide further properties of the derived category of an abelian category. Along the way we discuss slice categories and filtered colimits. This is the fifth video in our introduction to ∞-categories and Higher Algebra. Feel free to post comments and questions at our pub

From playlist Higher Algebra

Video thumbnail

Ind and Pro Categories Associated to a Category

This is super basic. I ripped this off of ncatlab, one of the best websites on the planet.

From playlist Category Theory

Video thumbnail

Excel Magic Trick 1398: DAX Formulas for Running Total and % of Running Total & other DAX Tricks

Download Files: Start File: https://excelisfun.net/files/EMT1398Start.xlsx Finish File: https://excelisfun.net/files/EMT1398Finished.xlsx See how to: 1. (00:15) Introduction 2. (02:45) Look at Data Model in Download file. This is the Data Model that we start with at beginning of video.

From playlist Excel Running Total Calculations: PivotTables, Excel Formulas & DAX Formulas

Video thumbnail

Tableau Tutorial For Beginners | Part 1 | Tableau Tutorial Part - 1 | Tableau Training | Simplilearn

🔥 Data Analyst Master's Program (Discount Code: YTBE15): https://www.simplilearn.com/data-analyst-masters-certification-training-course?utm_campaign=Tableau-fO7g0pnWaRA&utm_medium=DescriptionFF&utm_source=youtube 🔥 Professional Certificate Program In Data Analytics: https://www.simplilearn

From playlist 🔥Tableau | Tableau Tutorial For Beginners | Data Analytics With Tableau | Tableau Projects | Updated Tableau Playlist 2023 | Simplilearn

Video thumbnail

Tableau Training For Beginners 2021 | Tableau Tutorial For Beginners | Tableau Course | Simplilearn

🔥 Data Analyst Master's Program (Discount Code: YTBE15): https://www.simplilearn.com/data-analyst-masters-certification-training-course?utm_campaign=Tableau-xwj2p4LSD1k&utm_medium=DescriptionFF&utm_source=youtube 🔥 Professional Certificate Program In Data Analytics: https://www.simplilearn

From playlist 🔥Tableau | Tableau Tutorial For Beginners | Data Analytics With Tableau | Tableau Projects | Updated Tableau Playlist 2023 | Simplilearn

Video thumbnail

Excel 2013 PowerPivot Basics #10: CALCULATE function to Change Filter Context (14 Examples)

Download file: http://people.highline.edu/mgirvin/excelisfun.htm Scroll to down to PowerPivot Section. Topics in this video: 1. (00:34 min mark) Essence of PivotTable 2. (01:08 min mark) Overview of Filter Context and CALCULATE 3. (02:30 min mark) Look at how Filter Context works on a Cal

From playlist Excel 2013 PowerPivot Playlist of Videos

Video thumbnail

Higher Algebra 7: Non-abelian derived functors

In this video, we discuss the notion of non-abelian derived functors and Animation. Along the way, we discuss the Yoneda lemma. Warning: The Yoneda exercises stated at 35:00 is a bit hard given the technology we have, so I recommend simply proving the analogous statement for ordinary cat

From playlist Higher Algebra

Video thumbnail

Tableau Full Course - Learn Tableau In 6 Hours | Tableau Training for Beginners | Simplilearn

🔥Data Analyst Program (Discount Coupon: YTBE15) : https://www.simplilearn.com/data-analyst-masters-certification-training-course?utm_campaign=Tableau-HGMrIZq5dq0&utm_medium=Descriptionff&utm_source=youtube 🔥 Professional Certificate Program In Data Analytics: https://www.simplilearn.com/pg

From playlist 🔥Tableau | Tableau Tutorial For Beginners | Data Analytics With Tableau | Tableau Projects | Updated Tableau Playlist 2023 | Simplilearn

Video thumbnail

Commutative algebra 47: Colimits and exactness

This lecture is part of an online course on commutative algebra, following the book "Commutative algebra with a view toward algebraic geometry" by David Eisenbud. We discuss the question of when a colimit of exact sequences is exact. We first show that a colimit of right exact sequences i

From playlist Commutative algebra

Video thumbnail

Frequency Domain Interpretation of Sampling

http://AllSignalProcessing.com for more great signal-processing content: ad-free videos, concept/screenshot files, quizzes, MATLAB and data files. Analysis of the effect of sampling a continuous-time signal in the frequency domain through use of the Fourier transform.

From playlist Sampling and Reconstruction of Signals

Video thumbnail

Review of Linear Time Invariant Systems

http://AllSignalProcessing.com for more great signal-processing content: ad-free videos, concept/screenshot files, quizzes, MATLAB and data files. Review: systems, linear systems, time invariant systems, impulse response and convolution, linear constant-coefficient difference equations

From playlist Introduction and Background

Video thumbnail

Data Science Week Day - 4 | Data Visualization Course - Tableau, Power BI and Excel | Simplilearn

Explore our 🔥FREE Power BI Course with Completion Certificate: https://www.simplilearn.com/learn-power-bi-basics-free-course-skillup?utm_campaign=DSWEEKOCT22&utm_medium=DescriptionFirstFold&utm_source=youtube This Data Visualization full course will help you learn how to make sense of data

From playlist Simplilearn Live

Related pages

Limit (category theory) | Functor | Regular cardinal | Diagram (category theory) | Categories for the Working Mathematician | Cone (category theory) | Directed set | Presheaf (category theory) | Opposite category | Category theory | Category (mathematics) | Séminaire de Géométrie Algébrique du Bois Marie