User talk:Addemf

 Hello and Welcome to Wikiversity Addemf! You can contact us with questions at the colloquium or me personally when you need help. Please remember to sign and date your finished comments when participating in discussions. The signature icon above the edit window makes it simple. All users are expected to abide by our Privacy, Civility, and the Terms of Use policies while at Wikiversity.

To get started, you may


 * Take a guided tour and learn to edit.
 * Visit a (kind of) random project.
 * Browse Wikiversity, or visit a portal corresponding to your educational level: pre-school, primary, secondary, tertiary, non-formal education.
 * Find out about research activities on Wikiversity.
 * Explore Wikiversity with the links to your left.


 * Enable VisualEditor under Beta settings to make article editing easier.
 * Read an introduction for teachers and find out how to write an educational resource for Wikiversity.
 * Give feedback about your initial observations.
 * Discuss Wikiversity issues or ask questions at the colloquium.
 * Chat with other Wikiversitans on #wikiversity.

You do not need to be an educator to edit. You only need to be bold to contribute and to experiment with the sandbox or your userpage. See you around Wikiversity! --Dave Braunschweig (discuss • contribs) 20:38, 4 July 2021 (UTC)

Hello Addemf, good luck with your course on measure theory. I made here also one mathematical course, Mathematics for Applied Sciences (Osnabrück 2023-2024)/Part I, which is a translation from the corresponding course on german wikiversity. There I have also a course on measure theory and integration, de:Kurs:Maß-_und_Integrationstheorie_(Osnabrück_2022-2023). Bocardodarapti (discuss • contribs) 14:10, 29 December 2023 (UTC)


 * Hi Bocardodorapti, that's very cool, you've produced a lot there! With nice visuals and exercises -- I hope at some point to make similar components for my course.  Addemf (discuss • contribs) 16:16, 30 December 2023 (UTC)
 * of course, you can use everything, just by using (to give an example) . This came to my mind as I saw User:Addemf/sandbox/Hardy-Littlewood Maximal Inequality and the (slightly different) proof of the fundamental theorem there. By the way, the definite integral should not start at - \infty, then F(x) will often not be defined, but you can start everywhere at some $$a \in \R $$ (sorry for commenting on what I saw in the sandbox) Bocardodarapti (discuss • contribs) 19:21, 6 January 2024 (UTC)
 * I appreciate the offer, and I very likely will take you up on it! I am still somewhat exploring how to create my own visualizations, so in a few cases where I think it may be worthwhile, I will make my own visualizations.  When I do, of course you are free to help yourself to them as well.
 * As for the definite integral in that proof, I could be wrong but I believe the assumption that the function is integrable on all of $$\Bbb R$$ should ensure the existence of that area function. (And the intent is that, if you ever wanted an area function on a compact interval [a,b] one could always use an indicator function, but that it is slightly more general to take the lower limit to be $$-\infty$$.)
 * But I am principally trained in philosophy and not mathematics. So although I take a very significant interest in mathematics, I know that my skills are not quite at the level of a professional mathematician.  I may very well still be missing an important point here, and my apologies if I am. Addemf (discuss • contribs) 17:10, 8 January 2024 (UTC)
 * For visualizations you can use everything from Commons, which I also do. Above I meant how to include a complete proof ( I think I like your proof even better, as it does not use the mean value theorem).
 * On R, you have to distinguish between improper integrals and integrals. I guess you want to have a statement for all continuous functions, like polynomials. They are Riemann-integrable, and this means that $$ \int_a^b f(t)dt $$ exists, where a,b are real numbers. It does however not mean that $$ \int_{- \infty}^b f(t)dt $$ exists, as every polynomial shows (even a constant polynomial not 0, the area becomes infinity). The improper integrals deal also with such boundaries, e.g. one can show that $$ \int_{- \infty}^{-1} \frac{1}{t^2} dt $$ exists. It is nice that beside philosophy you have found interest in mathematics as well. Bocardodarapti (discuss • contribs) 18:13, 8 January 2024 (UTC)

Half-empty portals
Greetings, I am not sure a half-empty portal like e.g. Portal:Discrete Mathematics is a good idea. Are portals so much better than categories? I realize that a portal can have a structure that a category cannot have, other than via subcategories. But still, given how little there is in Portal:Discrete Mathematics, it leaves me in doubt. --Dan Polansky (discuss • contribs) 17:21, 14 March 2024 (UTC)


 * I was certainly debating this with myself and am open to suggestions.
 * I definitely think categories are not ideal, because they just look disorganized to a newcomer. I believe we should have some kind of extra ... "structure" although exactly what that means, I am very open to interpretation.  But I do think a person who clicks on the Mathematics link at the en-wikiversity page should have a clear idea and path to completed or mostly-completed courses.  I would imagine, if a person were searching for, say, geometry, it wouldn't be clear what sequence of links to click to navigate there.
 * As for portals with almost nothing there, I'm all ears about what to do about it. I was thinking portals was the way to "uniformly" handle the fact that some things (like discrete math, statistics, and perhaps others) have multiple different offerings.  I wouldn't want to show only one offering when multiple good ones exist.  But then if it's structured with portals for some courses, should it uniformly be structured with portals for all of them even when there is just one or no course offerings?
 * I am happy to take suggestions and change the design, and I don't object if anyone else wants to as well. I just started "doing" since I hadn't heard any objections or contributions when I posted to the discussion tabs of a few places. Addemf (discuss • contribs) 17:28, 14 March 2024 (UTC)
 * My idea is this: do not create portal that is going to be left nearly empty; if you have, say, 7 items to place in the portal, then perhaps create it. Disclaimer: these are my views and not necessarily views of the project and its policies and guidelines. --Dan Polansky (discuss • contribs) 10:34, 15 March 2024 (UTC)
 * I've filled in the arithmetic and algebra-and-geometry portals with a little more, just to see if you think this warrants a portal. If not then I'll happily take down the portals. Addemf (discuss • contribs) 16:36, 16 March 2024 (UTC)
 * Portal:Arithmetic is not too shabby now; I think it can stay (I don't decide it alone anyway). --Dan Polansky (discuss • contribs) 18:46, 16 March 2024 (UTC)

To wit, Portal:Arithmetic has only one item/link. There may be intent to add more, but I saw too many Wikiversity pages that had almost no content, signaled an intent and were left so over many years. --Dan Polansky (discuss • contribs) 17:24, 14 March 2024 (UTC)


 * I completely agree about how many pages signal intent and never got filled in -- and that it makes the site kinda look bad. No argument there.  Just let me know what you think is best and I can work on it. Addemf (discuss • contribs) 17:30, 14 March 2024 (UTC)


 * You have only created 6 portals, which is not excessive. Go ahead and follow your instincts.  Wikiversity can get in trouble when somebody creates too many pages, but you are nowhere near that limit (for examples of too many page creations, see User:Marshallsumter and User:Saltrabook.--Guy vandegrift (discuss • contribs) 16:52, 16 March 2024 (UTC)
 * I dont know what to do, I need help to get the deleted pages back again, thank you Saltrabook (discuss • contribs) 19:35, 17 March 2024 (UTC)
 * This is not my userpage. Go to my page at User talk:Guy vandegrift. If you can remember the exact name of the page, I can probably find it and move it to your userspace.--Guy vandegrift (discuss • contribs) 20:44, 17 March 2024 (UTC)
 * This are some of the deleted pages i need to continue on, thank you
 * T2D and HTN Research and Education plan 2023-2032[editar | editar código]
 * Screening program for diabetes type 2 and hypertension in seafarers’ routine medical examinations[editar | editar código]
 * Maritime Diabetes-type 2 Intervention study [editar | editar código]
 * Article[editar | editar código]
 * Workshops on Education and Research for the T2D/HTN prevention program[editar | editar código]
 * Revision of the ILO Guidelines for medical examination for seafarers[editar | editar código] Saltrabook (discuss • contribs) 18:10, 18 March 2024 (UTC)

Grouping your portals into subpages so that you "own" the project
Think about organizing all your portals into a subspace (see for example, Portal:Applied Mechanics/Subjects). Subspace is how you can distinguish your work from the rest of Wikiversity. The advantage of this is that you will essentially "own" all subpages in your collection of portals.--Guy vandegrift (discuss • contribs) 17:14, 16 March 2024 (UTC)
 * I don't know...maybe you could use Portal:Advanced mathematics as your top page? We would need to check with others before doing that (I have no direct experience with portal.)--Guy vandegrift (discuss • contribs) 17:19, 16 March 2024 (UTC)
 * Interesting, I'll continue to think about it. I am happy to take some ownership of things I think I can manage, but my only real goal is to make the page easy for a new visitor to find the best things that are already here.  Basically I want to cut down any clutter or ambiguity on the main math page, however we think that is best done.
 * But you're right, if I own a page then I can maybe do what seems best to me and then others can later decide if they want to adopt it as an organizational scheme for the rest of the department? That could give me the time to build out some version enough for others to see how it would work.  I'll keep thinking about it -- I assume nothing needs to change too quickly. Addemf (discuss • contribs) 17:53, 16 March 2024 (UTC)
 * I agree with you about the clutter problem, on Portals and other wiki pages. My intent wasn't that "owning" a portal meant only you used it, but that you would (informally) be the portal's "editor in chief". If you want your portals organized into a single portal with sub-portal, I have moved hundreds of pages in this manner. I could do it quickly and also delete all redirects.  Just let me know.
 * BTW I was a physics major, and your pages were so far outside my field that I couldn't judge their quality (although I never saw any telltale signs of nonsense.) What won me over was a simple example involving a limit where $$\int\sum\text{foobar}\ne\sum\int\text{foobar}$$.  I don't remember how many times a certain professor did this switcharoo and announced that this is a case where the switch is valid. I kept wondering, "When the switch not valid?." Guy vandegrift (discuss • contribs) 18:40, 16 March 2024 (UTC)
 * Fourier himself seemed to think the switcharoo was so obviously valid that it did not even warrant investigation! I am somewhat making some assumptions based on his correspondences, but that seems like the interpretation as far as I can tell.
 * It is somewhat funny to me how everything in math and physics takes its start "in the middle zone". We typically think about "medium sized dry goods" and then make progress by either digging deeper into the foundations, or extending our principles to bigger and more complicated systems.  In math, we have some common instincts about what should be true, but we make genuine progress by telling ourselves "No, wait, that's very tempting to do ... but is it really valid?"  :) Addemf (discuss • contribs) 18:52, 16 March 2024 (UTC)