Feb 5, 2025 · Since 1980, we've been at the forefront of crafting meticulously detailed model trains and accessories, bringing the magic of railroads into your home. With a passion for authenticity and a commitment to innovation, our products capture the essence of real-world trains, inspiring enthusiasts of all ages.

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Discover premium MTH O Scale Starter Sets for collectors. Classic engines, detailed cars. Ideal for train lovers. Shop today!

MTH Premier 20-80001B Dealer Appreciation Program DAP Canadian Pacific Proto Sound Passenger Train Set

In mathematics, a set is a collection of different [1] things; [2] [3] [4] these things are called elements or members of the set and are typically mathematical objects of any kind: numbers, symbols, points in space, lines, other geometrical shapes, variables, or even other sets. [5]

Founded in 1980 by Mike Wolf, MTH Electric Trains offers a wide selection of O-27, O gauge and O Scale locomotives, rolling stock and accessories. These products are complemented by a fast-growing line of 1/32 Scale G gauge offerings.

It simply defines a collection of objects or things of the same type. Sets in math are also defined in the similar context. In mathematics, a set is defined as a collection of distinct, well-defined objects forming a group. There can be any number of items, be it a collection of whole numbers, months of a year, types of birds, and so on.

This series of lessons cover the essential concepts of math set theory - the basic ways of describing sets, use of set notation, finite sets, infinite sets, empty sets, subsets, universal sets, complement of a set, basic set operations including intersection and union of sets, using Venn diagrams and simple applications of sets.

MTH manufactures products including trains, DCC, sound, layout, supply, tools, and more. Get your MTH train, available in H and O scales. Shop MTH trains today!

What is a set? Well, simply put, it's a collection . First we specify a common property among "things" (we define this word later) and then we gather up all the "things" that have this common property.