Order theory | Binary operations | Lattice theory | Binary relations
In mathematics, specifically order theory, the join of a subset of a partially ordered set is the supremum (least upper bound) of denoted and similarly, the meet of is the infimum (greatest lower bound), denoted In general, the join and meet of a subset of a partially ordered set need not exist. Join and meet are dual to one another with respect to order inversion. A partially ordered set in which all pairs have a join is a join-semilattice. Dually, a partially ordered set in which all pairs have a meet is a meet-semilattice. A partially ordered set that is both a join-semilattice and a meet-semilattice is a lattice. A lattice in which every subset, not just every pair, possesses a meet and a join is a complete lattice. It is also possible to define a partial lattice, in which not all pairs have a meet or join but the operations (when defined) satisfy certain axioms. The join/meet of a subset of a totally ordered set is simply the maximal/minimal element of that subset, if such an element exists. If a subset of a partially ordered set is also an (upward) directed set, then its join (if it exists) is called a directed join or directed supremum. Dually, if is a downward directed set, then its meet (if it exists) is a directed meet or directed infimum. (Wikipedia).
Google Meet: How to Join a Meeting
Google Meet is a video chatting app that lets you virtually connect with people when you can’t meet in-person. To join a Google Meet, all you’ll need is a link or code sent to you. In this video, we’ll walk with you through the steps to join a meeting and show you the basics of a video cal
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In this video, you’ll learn how to join groups on LinkedIn. Visit https://edu.gcfglobal.org/en/linkedin/keeping-up-with-linkedin/1/ for our text-based lesson. We hope you enjoy!
From playlist LinkedIn
Join my wife and me on the 1st day of our Diwali
Join my wife and me on the 1st day of our Diwali
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Join Our Exclusive Community (extra content)
Click Here to "Join" our channel Membership: https://www.youtube.com/channel/UCg3gzldyhCHJjY7AWWTNPPA/join Have Questions? We willl answer them in the comment section!
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Google Meet: Using the Mobile App
If you use your smartphone or tablet for work or to talk with family or friends, you can use Google Meet’s mobile app to virtually connect with a simple video call. The mobile app is easy to navigate and has many features that you can use such as sharing your screen and sending a message.
From playlist Google Meet
Hear it from students themselves - what do you get out of being a SIAM student member? From collaborations to networking opportunities and ways to get your research on the radar of other mathematicians, for those studying applied math and/or computational science, becoming a member of SIAM
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In this video I talk about how to form study groups. What suggestions do you have for people who want to form study groups? Leave a comment below:)
From playlist Inspiration and Advice
Our desire to build good and lasting friendships is often undermined by a lack of focus on what friendship should really be about. Getting clear about what friendship is for isn’t cynical; it provides the foundation for genuine bonds. If you like our films, take a look at our shop (we shi
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How to Make People Feel Good About Themselves
We often imagine that the best way to endear ourselves to others is never to bother to them - and always to fit in with their plans. But that's to miss out on a great yet hidden truth of social life: in certain circumstances, people quite like to be asked for help; friendship builds when
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You can join a Zoom meeting using an invitation link, a Meeting ID, or through your web browser. To learn more about Zoom visit: https://edu.gcfglobal.org/en/zoom-basics/ We hope you enjoy!
From playlist Zoom
Google Meet: How to Host a Meeting
To host a virtual reunion or meeting, you can use the video chatting app: Google Meet. What’s great about the app is that it lets you schedule a video conference ahead of time or quickly start a video call. As the host, you can choose to admit, deny, mute, or remove a person from the meeti
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Breakout Rooms in Microsoft Teams - Step by step tutorial
Nowadays with the pandemic you might be doing more and more meetings / conferences / workshops online, because everyone is working from home. The breakout rooms feature in Microsoft Teams is very easy to use, however for a new person moderating meetings, the lack of familiarity may cause s
From playlist Microsoft Teams
How to create a screen capture video using Microsoft Teams
Did you know how you can use Mcirosoft Teams alone to create screen capture videos? Here is how you do it! (I found many other videos currently on Youtube don't explain the first part of this video, so thought I'd make my own)
From playlist Microsoft Teams
Hosting a Zoom meeting of your own is pretty straightforward. To learn more about Zoom visit: https://edu.gcfglobal.org/en/zoom-basics/ We hope you enjoy!
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Perspectives in Math and Art by Supurna Sinha
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From playlist Kaapi With Kuriosity (A Monthly Public Lecture Series)
Google Meet: How to Present Using Google Slides
Presenting over Google Meet is a little bit different than presenting in-person. You’ll need to know how to use the video app’s interface so you can lead the meeting. There are two ways you can present: right at the beginning of the call or later on in the video conference. In this video,
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The Need to Be Honest at the Start of Relationships
In an effort to please a new partner, it’s sometimes tempting to stretch the truth. But to avoid difficulties down the line, it would be better to be honest - even blunt - from the off. Sign up to our mailing list to receive 10% off your first order with us: https://r1.dotdigital-pages.co
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Students Guide to Microsoft Teams - Attending Live Lessons in Microsoft Teams Meetings
Students Guide to Microsoft Teams - Attending a Live Lesson in Microsoft Teams Meetings. Microsoft Teams, the new communication / collaboration platform in Office 365, and a powerful tool for educators. This video explains how to find and join your live lessons in Microsoft Teams, some ad
From playlist Microsoft Teams - Guide for Teachers / Schools