Bulletin – September 2017 Equation (A5)

g t = g t1 + ε t g MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaam4zamaaBaaaleaacaWG0baabeaakiabg2da9iaadEgadaWgaaWcbaGaamiDaiabgkHiTiaaigdaaeqaaOGaey4kaSIaeqyTdu2aa0baaSqaaiaadshaaeaacaWGNbaaaaaa@4173@