Juglans major lanceolate leaflets, wide by long. The small nut has a thick shell with deep grooves enclosing an oily, edible seed. Where the range of "J. major" overlaps that of "J. microcarpa", the two interbreed, producing many intermediate forms. Juglans major Juglans major (literally, the larger walnut), also known as Arizona walnut, is a walnut tree which grows to with a DBH of up to at elevations of in Texas, Oklahoma, New Mexico, Arizona, and Utah. It also occurs in Mexico as far south as Guerrero. Common names include Arizona black walnut (as it belongs to the "black walnuts" section "Juglans"
Two-sided market that the greater the multihoming costs, the greater is the tendency toward market concentration. Higher multihoming costs reduce user willingness to maintain affiliation with competing networks providing similar services. Attracted by the prospects of large margins, platforms can try to compete to be the winner-take-all in two-sided markets with strong network effects. That means that one platform serves the mature networked market. Examples of the standards battles include VHS vs Betamax, Microsoft vs Netscape and the DVD market. Not all two-sided markets with strong positive network effects are optimially supplied by a single platform. Markets must have high multi-homing costs