Core up, however supercore down:
Determine 1: Instantaneous inflation for core CPI (blue), chained core CPI (tan), supercore CPI (pink), providers supercore (mild inexperienced), PPI core (pink), and PCE core (inexperienced), per Eeckhout (2023), T=12, a=4. Supply: BLS, BEA, Pawel Skrzypczynski,  and writer’s calculations.
