Character Relationship Map: Infinity

Characters

• Richard Feynman (played by Matthew Broderick) — protagonist

  The central figure, a physicist whose life spans from childhood inspiration to moving to Los Alamos. His romantic relationship with Arline and her subsequent illness deeply impact him, culminating in...

• Arline Greenbaum (played by Patricia Arquette) — protagonist

  Richard's high school sweetheart who develops a romantic relationship with him. She later contracts lymphatic tuberculosis, follows him to Albuquerque, and passes away, leaving a profound emotional im...

• Mel Feynman (played by Peter Riegert) — supporting

  Richard's father, who introduces him to scientific inspiration and the natural world in the woods during 1924, shaping the young Richard's intellectual curiosity.

• Young Richard (played by Jeffrey Force) — supporting

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Mel Feynman → Young Richard (Family Father) — Mel guides Richard during his childhood.

  The 1924 woodland scene shows Melville walking with the young Richard and sharing his scientific inspiration with him.

• Mel Feynman → Richard Feynman (Family Father) — Mel Feynman is Richard Feynman's father.

  In 1924, Richard walks through the woods with his father Melville, identified in the character list as Mel Feynman.

• Richard Feynman → Arline Greenbaum (Romantic Partner) — Richard and Arline become high school sweethearts.

  In 1934, Richard and Arline are in high school, where their romantic relationship begins.

Story Analysis

A physicist's life is shaped by childhood inspiration, enduring love, illness, and the grief that follows loss.

Plot Progression

1. A Father Shapes Curiosity — In 1924, Mel Feynman walks through the woods with Young Richard. He shares the scientific inspiration that influences Richard's early curiosity.
2. High School Love Begins — The story moves to 1934, when Richard and Arline are high school students. Their romantic relationship begins during this period.
3. Illness Changes Everything — During Richard's college years, Arline becomes sick with lymphatic tuberculosis. Her illness transforms the couple's future and introduces deep uncertainty.
4. Love Across New Mexico — Richard moves west to Los Alamos National Laboratory. Arline later follows him and is taken to a hospital in Albuquerque.
5. The Red Dress Memory — Arline dies in the Albuquerque hospital. The film closes with Richard crying when he sees the red dress Arline had pointed out.