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Although corporate pyramids are currently commonplace world-wide and although there have been “noteworthy pyramiders” in American business history, this controversial form of corporate organization is now a rarity in the United States. The conventional wisdom is that corporate pyramids disappeared in the U.S. when New Deal policymakers began taxing dividends paid to corporate shareholders. This version of events is more fable than truth. The introduction of the intercorporate dividend tax did not foster a rapid dismantling of corporate pyramids. Instead, pyramidal arrangements were already rare in the U.S., other than in the utilities sector, and the demise of utility pyramids was prompted by the Public Util- ities Holding Company Act of 1935 rather than by tax reform.

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Abstract.In this note, we present two results concerning meromorphic functions on the whole finite plane, which are solutions of algebraic differential equations (i.e., equations of the form U(z, y, dy/dz, ■ ■ ■ , d"y/dz") =0, where U is a polynomial in z, y, dy/dz, ■ ■ ■ , dny/dzn).