- Oct 2024
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Local file Local file
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Thus if P isthe set of all sets, we can apparently form the set Q = {Ae P| A ¢ A}, leading tothe contradictory Oe Q iff O¢€ Q. This is Russell’s paradox (see Exercise 1A)and can be avoided (in our naive discussion) by agreeing that no aggregate shallbe a set which would be an element of itself.
Russell's paradox (1901) in set theory can be stated as:
If $$P$$ is the set of all sets, one can form the set $$Q = {A \in P | A \notin A}$$ which can lead to the contradiction $$Q \in Q$$ iff $$Q \notin Q$$.
This can be done by dividing P into two non-empty subsets, $$P_1 = {A \in p | A \notin A}$$ and $$P_2={A \in P | A \in A}$$. We then have the contradiction $$P_1 \in P_1$$ iff $$P_1 \notin P_1$$.
The paradox happens when we allow as sets A for which $$A \in A$$. It can be remedied by agreeing that no collection can be a set which would be an element of itself.
Relation to Groucho Marx's quote (earliest 1949) about resigning membership of a club which would have him as a member: https://hypothes.is/a/3_zAfITjEe-H5-PlfOlK8A
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- Aug 2024
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www.ihpva.org www.ihpva.org
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for - IHPVA - membership - International Human Powered Vehicle Association - membership page
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- May 2023
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openscholarlyinfrastructure.org openscholarlyinfrastructure.org
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Non-discriminatory membership – we see the best option as an “opt-in” approach with a principle of non-discrimination where any stakeholder group may express an interest and should be welcome. The process of representation in day to day governance must also be inclusive with governance that reflects the demographics of the membership.
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- Feb 2022
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fivethirtyeight.com fivethirtyeight.com
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First, consider who gets to make the rules. Tenured scholars who, as we’ve noted, are mostly white and male, largely make the rules that determine who else can join the tenured ranks. This involves what sociologists call “boundary work,” or the practice of a group setting rules to determine who is good enough to join. And as such, many of the rules established around tenure over the years work really well for white scholars, but don’t adequately capture the contributions of scholars of color.
Boundary work is the practice of a group that sets the rules to determine who is and isn't good enough to join the group.
Link to Groucho Marx quote, "I refuse to join any club that would have me as a member."
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- Oct 2021
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www.continuous-learning-institute.com www.continuous-learning-institute.com
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academic and student services team that collaborates to plan and implement data-informed, equity-infused practices along the student journey.
Hmmm...kind of sounds like our Dev Ed Committee...
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- Mar 2019
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www.ispi.org www.ispi.org
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ISPI offers a variety of publications, from its member-exclusive monthly and quarterly journals, "Performance Improvement Journal and Performance Improvement Quarterly,"
International Society for Performance Improvement This is the web page of the professional association. It is similar to other professional association web pages. Some content is available only to those with a membership; individuals must log in. There are links to the publications. These include Performance Improvement Journal, Performance Improvement Quarterly, Performance Xpress. Some features of the website can become a bit difficult to drill down to but there are sometimes job aids and other immediately usable content available. This topic relates to shaping performance of adult employees on the job. Rating: 4/5
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- Dec 2018
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associationsnow.com associationsnow.com
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A lot of membership pros will think, “All I am trying to do is get this guy to write a check for $1,200 to join, that’s all I want him to do. I don’t care that he is going to be a member for 20 years. That’s nice, but none of that matters unless I get him to write the first check,” Stackpole says. “And so, folks, especially marketing and membership sales folks, sometimes get frustrated with this idea [LTV], because it doesn’t seem to have any relevance to the immediate goal.” The traditional LTV calculation looks like this: (dues + nondues revenue) x average tenure = LTV But Stackpole says associations have greater ability today than ever before to track and assign a dollar value to nonmonetary engagement like committee service, knowledge contribution, grassroots advocacy, or anything else the association deems important. Adding those elements to the equation can reveal the long-term worth of an association’s most engaged members.
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- Oct 2018
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www.theedenclub.com www.theedenclub.com
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The Eden Club - Exclusive Golf Club Membership | International Private Members Club
The Eden Club is an international private members' club providing three very special dimensions: the most luxurious private members club in St Andrews, Scotland – the home of golf; an outstanding schedule of annual events and a unique Secretariat service.
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- Apr 2017
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Local file Local file
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p. 56 (and 67[sic--it isn't there]) membership on mailing lists tends to be more stable in the spring semester than the fall
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