In probability theory, the notation "P(c) = 0" indicates that the probability of event c occurring is zero. This means that event c is impossible under the given conditions or within the defined sample space. For example, if c represents drawing a red card from a standard deck of only black cards, then P(c) would equal zero. It's important to note that a probability of zero does not imply that the event cannot happen in an absolute sense; rather, it suggests that within the specific context, the event has no chance of occurring. This concept is crucial in fields like statistics and mathematics for understanding and modeling uncertain events.