an IT system to determine whether it is an instance of the named platform. A general requirement for the naming structure is that the set of platforms identified by a long. name should be a subset of the set of platforms identified by a shorter initial portion of that same. name.
The first true ragtime composition was published by William Krell called The Mississippi Rag in 1897. Tom Turpin, the first published African American composer wrote The Harlem Rag the same year.
The emergence of mature ragtime is usually dated to 1897, the year in which several important early rags were published. In 1899, Scott Joplin 's  Maple Leaf Rag  was published and became a great hit and demonstrated more depth and sophistication than earlier ragtime.