Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Counter-machine model
open-in-new
<p>There are many variants of the <a href="/facts/Counter_machine/FBxEgPld">counter machine</a>, among them those of <a href="/facts/Hans_Hermes/6C0zAHtB">Hermes</a>, <a href="/facts/Andrey_Ershov/z2B4LyoI">Ershov</a>, <a href="/facts/R%25C3%25B3zsa_P%25C3%25A9ter/rXPJ8Waw">Péter</a>, <a href="/facts/Marvin_Minsky/HTU5MYLL">Minsky</a>, <a href="/facts/Joachim_Lambek/9D89T3VD">Lambek</a>, Shepherdson and Sturgis, and <a href="/facts/Arnold_Sch%25C3%25B6nhage/t3LukeNN">Schönhage</a>. These are explained below. </p>