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).
Definition and Facts for Peptic Ulcer Disease. âA peptic ulcer is a sore on the lining of your stomach or duodenum. People who take NSAIDs such as aspirin and ibuprofen long-term or are infected with the bacteria H. pylori are most likely to develop peptic ulcers.â. Symptoms and Causes of Peptic Ulcer Disease.