This image depicts an academic setting, specifically a classroom or lecture hall, likely within the Universidad de las Américas Puebla (UDLAP) in San Andrés Cholula, Mexico. A white Epson projector is ceiling-mounted, projecting a presentation onto a large white screen. The projected slide, titled "Enfoque de Koyck V" (Koyck Approach V), is from an "Econometría II" (Econometrics II) course, dated "Primavera 2026" (Spring 2026), and is slide 26 of 66. The content discusses the "Modelo de Koyck - mediana de rezagos" (Koyck Model - median of lags) in Spanish, presenting a definition, a mathematical formula (Mediana de rezagos = -log 2 / log λ), and numerical examples. To the left of the projected content, a person's right arm and hand are visible, holding a dark object, likely a marker or pointer, and gesturing towards the screen. In the immediate foreground, the back of an attendee's head, covered by a dark beanie, is visible. Below this attendee, a dark-orange surface, possibly a folder or desk, bears the fragmented text "RICAS PUEBLA" and "IEBLA", strongly suggesting an affiliation with Universidad de las Américas Puebla (UDLAP). To the far right, a partial view of another desk or surface includes a white bottle and additional handwritten mathematical notation on a whiteboard or similar surface. in San Andrés Cholula, Mexico

Feb 18, 2026, 2:35 PM

San Andrés Cholula, Mexico

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This image depicts an academic setting, specifically a classroom or lecture hall, likely within the Universidad de las Américas Puebla (UDLAP) in San Andrés Cholula, Mexico. A white Epson projector is ceiling-mounted, projecting a presentation onto a large white screen. The projected slide, titled "Enfoque de Koyck V" (Koyck Approach V), is from an "Econometría II" (Econometrics II) course, dated "Primavera 2026" (Spring 2026), and is slide 26 of 66. The content discusses the "Modelo de Koyck - mediana de rezagos" (Koyck Model - median of lags) in Spanish, presenting a definition, a mathematical formula (Mediana de rezagos = -log 2 / log λ), and numerical examples. To the left of the projected content, a person's right arm and hand are visible, holding a dark object, likely a marker or pointer, and gesturing towards the screen. In the immediate foreground, the back of an attendee's head, covered by a dark beanie, is visible. Below this attendee, a dark-orange surface, possibly a folder or desk, bears the fragmented text "RICAS PUEBLA" and "IEBLA", strongly suggesting an affiliation with Universidad de las Américas Puebla (UDLAP). To the far right, a partial view of another desk or surface includes a white bottle and additional handwritten mathematical notation on a whiteboard or similar surface.

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