Struct ConformalSpacetime 

pub struct ConformalSpacetime {
    pub id: u64,
    pub label: Option<String>,
    pub causal_links: BTreeSet<u64>,
}

A minimal spacetime model preserving only causal and angular structure, based on conformal geometry.

ConformalSpacetime models causal relationships (what can influence what) without assigning meaning to distances or durations. This is useful for:

• Conformal diagrams (Penrose diagrams)
• Asymptotic analysis (e.g., black hole horizons, AdS boundaries)
• Symbolic causal inference when exact metrics are unknown or irrelevant

Fields

• id: Unique identifier for this event or node
• label: Optional symbolic annotation (e.g., “i+”, “scri−”, “origin”)
• causal_links: IDs of other nodes reachable via causal paths

Notes

• This type ignores units, curvature, and absolute scale
• It encodes who can affect whom, not how or when
• Useful when embedding causal graphs inside bounded spacetime representations

Example

use deep_causality::*;

let mut n1 = ConformalSpacetime::new(1, Some("Origin".into()));
let mut n2 = ConformalSpacetime::new(2, Some("Infinity".into()));

n1.link_to(2); // n1 can influence n2

assert!(n1.can_affect(2));

Fields

id: u64

Unique identifier for this event

label: Option<String>

Optional symbolic label (e.g., “i+”, “scri”, “horizon”)

causal_links: BTreeSet<u64>

Causally reachable nodes (light cone structure only)

Implementations

impl ConformalSpacetime

pub fn new(id: u64, label: Option<String>) -> Self

impl ConformalSpacetime

pub fn link_to(&mut self, other_id: u64)

Adds a forward causal connection (like drawing a light ray)

pub fn can_affect(&self, other_id: u64) -> bool

Checks if this node can causally influence the other node

pub fn fanout(&self) -> usize

Returns number of causal outputs (fanout of light cone)

Trait Implementations

impl Clone for ConformalSpacetime

fn clone(&self) -> ConformalSpacetime

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ConformalSpacetime

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ConformalSpacetime

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ConformalSpacetime

fn eq(&self, other: &ConformalSpacetime) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ConformalSpacetime