The question was difference between function and functional not definition of functional. I guess the difference is when we refer to functional we mean a set of possible functions; but when we say function we mean a specific function not a set of functions.
Overview Functional dyspepsia is a term used to describe a lingering upset stomach that has no obvious cause. Functional dyspepsia (dis-PEP-see-uh) also is called nonulcer dyspepsia. Functional dyspepsia is common. It is a constant condition, but symptoms don't happen all the time. Symptoms are like those of an ulcer. They include pain or discomfort in the upper belly, bloating, belching and ...
Overview Functional neurologic disorder — a newer and broader term that includes what some people call conversion disorder — features nervous system (neurological) symptoms that can't be explained by a neurological disease or other medical condition. However, the symptoms are real and cause significant distress or problems functioning.
Treatment Functional dyspepsia that can't be managed with lifestyle changes may need treatment. Treatment depends on symptoms. It may combine medicines and behavior therapy. Medicines Some medicines may help manage symptoms of functional dyspepsia. They include: Gas remedies that are available without a prescription.
Treatment for functional neurologic disorder will depend on your particular signs and symptoms. For some people, a multispecialty team approach that includes a neurologist; psychiatrist or other mental health professional; speech, physical and occupational therapists; or others may be appropriate.
Furthermore, a formal analysis of the Taylor expansion of the density functional for an interacting electron system at finite temperature is given and the relation between density-functional theory and the field-theoretical approach to the many-particle problem is enlightened.
Overview People who have had a spinal cord injury may benefit from functional electrical stimulation (FES) as part of their rehabilitation. This therapy uses computer technology to send low-level electrical impulses to specific muscles in your legs, arms, hands or other areas. Electrodes are placed over the nerves, and stimulate the nerves to allow you to do activities such as walking or ...
I do not understand, if the functional derivative is a function a generalized function (distribution) a functional itself something different (see Euler-Lagrange) To clarify my question, I have seen
