No duplicate event sequence is found in three Kepler candidate pairs near integer period ratios from one to five

We tested 1,637 pairs of signals listed on the same target in the Kepler DR25 KOI table. Nineteen pairs have period ratios within 0.1 percent of integers from one to five. We computed predicted event boxes over BKJD 120 to 1600. Only two pairs have overlap for at least 90 percent of the longer-period events. Both already have two pipeline false-positive labels. None of the three pairs with two pipeline-candidate labels has any overlapping event centers under the box rule. Their near-integer period ratios also occur in DR24. One of the two matched false-positive pairs changes from a ratio near one in DR24 to a ratio near two in DR25. Uniform phase controls do not show an excess match count. This bounded null result supplies an event-level alias screen. It establishes no new planet or physical cause. Shared observations, linear timing, catalog duration errors, and missing coverage limit the test. The package contains code, frozen catalogs, exact hashes, event residuals, phase controls, and offline instructions.

Kepler · period aliases · ephemeris matching · null result · catalog audit