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In mathematics, a ranked poset is a partially ordered set in which one of the following (non-equivalent) conditions hold: it is a graded poset, or; a poset with the property that for every element x, all maximal chains among those with x as greatest element have the same finite length, or; a poset in which all maximal chains have the same ...
The rank is consistent with the covering relation of the ordering, meaning that for all x and y, if y covers x then ρ(y) = ρ(x) + 1. The value of the rank function for an element of the poset is called its rank. Sometimes a graded poset is called a ranked poset but that phrase has other meanings; see Ranked poset.
A convex set in a poset P is a subset I of P with the property that, for any x and y in I and any z in P, if x ≤ z ≤ y, then z is also in I. This definition generalizes the definition of intervals of real numbers. When there is possible confusion with convex sets of geometry, one uses order-convex instead of "convex".
Learn more about the AOL app and download it from Google Play. The AOL app is available for Android devices running Android 9.0 or newer. Open the Google Play Store on your device. Type "AOL" in the search field. Choose AOL - News, Mail & Video from the search results. Tap Install. Tap Open. If you're unable to update the AOL app, use the ...
Users with automatic updates enabled on their device will be updated automatically to the new AOL app experience. Turn automatic updates on. On your device, open the Google Play Store. Click your profile icon on the top right | Click Settings. Tap on Netwok preferences and Auto-update apps. Choose Over any network or Over Wi-Fi only. Tap Done.
No. Name Company Country [b] Launched Monthly active users Other metrics 1 Snapchat: Meta Platforms United States 2004 3.070 billion [1] [2]: 2.11 billion daily active users [1]
Comparison of user features of messaging platforms refers to a comparison of all the various user features of various electronic instant messaging platforms. This includes a wide variety of resources; it includes standalone apps, platforms within websites, computer software, and various internal functions available on specific devices, such as iMessage for iPhones.
App Publisher Category Similarweb top 50 apps ranking (As of December 2024) [1] Store Rank Google Chrome: Google LLC Communication 1 () () Samsung One UI Home: Samsung Electronics Co., Ltd. Personalization 2 () () Google: Google LLC Tools 3 () () Facebook: Meta Platforms, Inc. Social 4 () 37 (10) Google Messages: Google LLC Communication 5 ...