Convexity Real

Function Convexity Real within Inflation Bondreturns the real convexity(ies) of the referenced inflation bond(s) as of a given reference date T.
The real convexity is defined in the same way as the regular Convexity, albeit with respect to the real economy associated with a given real yield yʳas defined in Yield Real
Since the convexity definition involves ratios of dirty bond prices, it turns out that the inflation index drops out and the real convexity equals the regular convexity of the corresponding inflation-unadjusted bond defined in Underl Bond

If the settlement date Tˢ is not explicitly given, it will be set to the bond's settlement date as implied by a trade transaction assumed to occur on the trade dateT₀ (typically today).