A few months ago I have published my paper in arxiv. Now I came to know that a automatic DOI (digital object identification) number is given to it. Is it ok or normal?
I have no idea about DOI. What is the given DOI?
A few months ago I have published my paper in arxiv. Now I came to know that a automatic DOI (digital object identification) number is given to it. Is it ok or normal?
I have no idea about DOI. What is the given DOI?
Since the question of what a DOI is has been answered already by @Buffy, I will only answer the question of whether this is normal or okay.
Since January 2022 arXiv is automatically assigning a DOI to every preprint in addition to the arXiv identifier. This change hase been announced on the arxiv.org blog.
One of the reasons for this change is the goal to make the preprints easier to discover via different search engines.
Update May 2022: Now all existing arXiv preprints have a DOI (thank you @Jake for this information).
A google search will turn up the link to the official site: https://www.doi.org.
It will also give a link to the neutral explanations at Wikipedia: https://en.wikipedia.org/wiki/Digital_object_identifier.
From Wikipedia:
A digital object identifier (DOI) is a persistent identifier or handle used to identify objects uniquely, standardized by the International Organization for Standardization (ISO).
See the links for more.
ArXiv has information about automatic assignment of a DOI here: https://arxiv.org/help/bib_feed