Subtraction is the inverse of addition. 2. Either of two numbers or quantities that cancel each other out under a given mathematical operation. For example, the inverse of 5 under multiplication is 1 / 5, since 5 Ã 1 / 5 = 1.
Peptic ulcer disease refers to painful sores or ulcers in the lining of the stomach or first part of the small intestine, called the duodenum. No single cause has been found for ulcers. However, it is now clear that an ulcer is the end result of an imbalance between digestive fluids in the stomach and duodenum. Most ulcers are caused by an infection with a type of bacteria called Helicobacter pylori (H. pylori).
Gastric Ulcer. When a peptic ulcer is in your stomach, it is called a gastric ulcer. The symptoms of gastric ulcers are more specific than peptic ulcer symptoms. Duodenal Ulcer. When a peptic ulcer is in your duodenum, it is called a duodenal ulcer.ost people know about two types of ulcers before they get diagnosed with a more specific type of ulcer. Generally, people refer only to stomach ulcers and peptic ulcers. We explain what the difference is between these two, and we also explain more about the lesser known stomach ulcers.