Category Archives: Spencer Brown

A funny thing just happened.  Let’s see if we can tell where.  We started with the algebraic expression in which the operand suggests the contemplated absence or presence of any arithmetic expression or its value, then we contemplated the absence … Continue reading →

Another tactic I tried by way of porting operator variables into logical graphs and laws of form was to hollow out a leg of Spencer-Brown’s crosses, gnomons, markers, whatever you wish to call them, as shown below: The initial idea … Continue reading →

We have encountered the question of how to extend our formal calculus to take account of operator variables. In the days when I scribbled these things on the backs of computer punchcards, the first thing I tried was drawing big … Continue reading →

We had been contemplating the penultimately simple algebraic expression as a name for a set of arithmetic expressions, namely, taking the equality sign in the appropriate sense. Then we asked the corresponding question about the operator   The above selection … Continue reading →

To get a clearer view of the relation between primary arithmetic and primary algebra consider the following extremely simple algebraic expression: In this expression the variable name appears as an operand name.  In functional terms, is called an argument name, … Continue reading →

In lieu of a field study requirement for my bachelor’s degree I spent a couple years in a host of state and university libraries reading everything I could find by and about Peirce, poring most memorably through the reels of … Continue reading →

In George Spencer Brown’s Laws of Form the relation between the primary arithmetic and the primary algebra is founded on the idea that a variable name appearing as an operand in an algebraic expression indicates the contemplated absence or presence … Continue reading →