MathSpeak™ Core Specification

Grammar Rules

Chapter 10 - Cancellation

Verbose Brief Super-Brief
Cancellation
Cancel
Begin Cross Out Cross Out Cross Out
Cancelled By With With With
End End Cross Out End Cross Out End Cross Out

Rule 10.1 - ID: cancel_SIM1

Applies To

Expressions that are crossed out.

Description

Expressions that have one or more lines crossing it horizontally or diagonally are denoted by cancellation indicators before and after the expression.

Example 1 cancel_SIM1-05

Example Image:

Example as described below.
verbose
StartFraction 5 x CrossOut y EndCrossOut Over 2 CrossOut y EndCrossOut EndFraction equals five-halves x
Listen to MathSpeak
brief
StartFrac 5 x CrossOut y EndCrossOut Over 2 CrossOut y EndCrossOut EndFrac equals five-halves x
Listen to MathSpeak
superbrief
Frac 5 x CrossOut y EndCrossOut Over 2 CrossOut y EndCrossOut EndFrac equals five-halves x
Listen to MathSpeak

Rule 10.2 - ID: cancel_MOD1

Applies To

Crossed out expressions that are replaced with another expression above or below.

Description

Example 1 cancel_MOD1-05

Example Image:

Example as described below.
verbose
StartFraction 12 Over 18 EndFraction equals StartFraction CrossOut 12 With 2 EndCrossOut Over CrossOut 18 With 3 EndCrossOut EndFraction equals two-thirds
Listen to MathSpeak
brief
StartFrac 12 Over 18 EndFrac equals StartFrac CrossOut 12 With 2 EndCrossOut Over CrossOut 18 With 3 EndCrossOut EndFrac equals two-thirds
Listen to MathSpeak
superbrief
Frac 12 Over 18 EndFrac equals Frac CrossOut 12 With 2 EndCrossOut Over CrossOut 18 With 3 EndCrossOut EndFrac equals two-thirds
Listen to MathSpeak