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In mathematics, specifically group theory, the free product is an operation that takes two groups G and H and constructs a new group G ∗ H. The result contains both G and H as subgroups , is generated by the elements of these subgroups, and is the “ universal ” group having these properties, in the sense that any two homomorphisms from G ...
Free samples. A free sample or "freebie" is a portion of food or other product (for example beauty products) given to consumers in shopping malls, supermarkets, retail stores, or through other channels (such as via the Internet). Sometimes samples of non-perishable items are included in direct marketing mailings.
A visual representation of the sampling process. In statistics, quality assurance, and survey methodology, sampling is the selection of a subset or a statistical sample (termed sample for short) of individuals from within a statistical population to estimate characteristics of the whole population. The subset is meant to reflect the whole ...
The most obvious economic effect of Wikipedia has been the death of commercial encyclopedias, especially printed versions like Encyclopædia Britannica, which were unable to compete with a product that is essentially free.
Blender – Computer graphics software featuring modeling, sculpting, texturing, rigging, simulation, rendering, camera tracking, video editing, and compositing. MakeHuman. OpenFX – Modeling and animation software with a variety of built-in post processing effects. Seamless3d – Node-driven 3D modeling software.
Other areas of Wikipedia. Community portal – The central hub for editors, with resources, links, tasks, and announcements. Village pump – Forum for discussions about Wikipedia itself, including policies and technical issues. Site news – Sources of news about Wikipedia and the broader Wikimedia movement.
Food sampling. Food sampling is a process used to check that a food is safe and that it does not contain harmful contaminants, or that it contains only permitted additives at acceptable levels, or that it contains the right levels of key ingredients and its label declarations are correct, or to know the levels of nutrients present.
Free sound resources. There are a number of free sound effects resources of public domain or free content sound recordings appropriate for Wikipedia use available online, and as well as in other contexts. All files should be converted to ogg, Wikipedia's patent-free format of choice.
To place a file in this category, add the tag {{Non-free audio sample}} to the bottom of the file's description page. If you are not sure which category a file belongs to, consult the file copyright tag page .
Free goods and services. Wikimedia Commons has media related to Free goods and services. This category holds all manner of things available at no cost (that are usually or often charged for). See Free (gratis) .