Citing yourself on slides when your lastname consists of multiple words When citing a paper that you coauthored on a slide it is common to abbreviate your name to just the first letter of your last name, or your initials. So John Doe would become D or JD. 

My last name consists of multiple words like 'van der Broek'. Should I then abbreviate it to 'vdB' or just 'B'?
It's an informal convention, so I think the answer is as much a matter of personal style as anything else.  I would most expect "vdB", but if someone used "B", I wouldn't be confused by that.