No, 'Get Shorty' is not a sequel to 'Pulp Fiction'. Although both films were written and directed by the same person, Quentin Tarantino, the two films have very different plots and characters.
'Pulp Fiction', released in 1994, follows the lives of two mob hit men, a gangster's wife, and a pair of desperados as they intertwine in four interrelated tales. 'Get Shorty', released in 1995, follows a gangster who attempts to make it as a movie producer in Hollywood.
The first difference between 'Get Shorty' and 'Pulp Fiction' is the setting. 'Pulp Fiction' is set in California and has a darker, grittier atmosphere. 'Get Shorty' is set in Las Vegas and Hollywood and is much lighter in tone.
Another major difference between the two films is the main characters. 'Pulp Fiction' stars John Travolta and Samuel L. Jackson as Vincent and Jules respectively. In 'Get Shorty', Travolta plays the lead role of Chili Palmer, a gangster trying to break into the movie business. While Jackson makes an appearance in 'Get Shorty', he plays an entirely different character.
Finally, the themes in 'Pulp Fiction' and 'Get Shorty' are very different. 'Pulp Fiction' is a dark, violent crime drama that explores themes like mortality and morality. 'Get Shorty' is a comedic, crime caper that focuses on themes like Hollywood hype and luck.
In summary, 'Get Shorty' is not a sequel to 'Pulp Fiction', although both films were written and directed by Tarantino. The films have different settings, main characters, and themes.