Bubble pushing
From Rice Wiki
çOn a gate, when all the inputs are inverted (i.e. bubbled), you can push the bubble through while changing the shape of the gate. This process is called bubble pushing. This technique is based on De Morgan's law.
çOn a gate, when all the inputs are inverted (i.e. bubbled), you can push the bubble through while changing the shape of the gate. This process is called bubble pushing. This technique is based on De Morgan's law.