The title of the work introduced is Rechnung nach der lenge/auff den Linien und Feder.
<h3>What are mathematical operations?</h3>
In mathematics, an operation is a function that takes zero or more input values to a well-defined output value.
Adam Riese developed the signs + and - as mathematical operations and the title of the work introduced is Rechnung nach der lenge/auff den Linien und Feder.
