1 Know what a set and an element are. 2  Write a mathematical statement with an equal sign or an inequality.  Identify what numbers belong to the set of natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers.
Discogenic spondylosis, which is often thought of as a form of spinal osteoarthritis, refers to a degenerative condition that affects the joints of the spine.
For example, the phrase spondylosis of the lumbar spine means degenerative changes such as osteoarthritis of the vertebral joints and degenerating intervertebral discs (degenerative disc disease) in the low back. Spondylosis can occur in the cervical spine (neck), thoracic spine (upper and mid back), or lumbar spine (low back).