public function multiply($multiplicand) {
		$func = function($n) use ($multiplicand) {return \ianring\PMTObject::_truemod(($n * $multiplicand), 12);};
		$this->tones = array_map($func, $this->tones);
	}
public function multiply($multiplicand) {
		$func = function($n) use ($multiplicand) {return \ianring\PMTObject::_truemod(($n * $multiplicand), 12);};
		$this->tones = array_map($func, $this->tones);
	}
public function multiply ( $ multiplicand ) { $ func = function ( $ n ) use ( $ multiplicand ) { return \ ianring \ PMTObject :: _truemod ( ( $ n * $ multiplicand ) , 12 ) ; } ; $ this -> tones = array_map ( $ func , $ this -> tones ) ; }
applies multiply mod 12 by a multiplicand to each member of the set. This is the transformation
usually shorthanded as "M" appended with the multiplicand, as in "M7".
"M1" returns the original set, "M11" is the same as inversion.
@return [type] [description]
applies multiply mod 12 by a multiplicand to each member of the set . This is the transformation usually shorthanded as M appended with the multiplicand as in M7 . M1 returns the original set M11 is the same as inversion .