Pith Number

pith:GYKMLDUG

pith:2021:GYKMLDUGIQPUIVIIDJ7PKWO6AJ

not attested not anchored not stored refs pending

Time Symmetry in Operational Theories

Lucien Hardy

arxiv:2104.00071 v1 · 2021-03-31 · quant-ph · gr-qc · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GYKMLDUGIQPUIVIIDJ7PKWO6AJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

An equivalence between time-symmetry and cyclic causality in quantum theory

Receipt and verification

First computed	2026-07-05T02:28:23.558220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3614c58e86441f4455081a7ef559de024486828dce8dcc655f4f3bbefec38e26

Aliases

arxiv: 2104.00071 · arxiv_version: 2104.00071v1 · doi: 10.48550/arxiv.2104.00071 · pith_short_12: GYKMLDUGIQPU · pith_short_16: GYKMLDUGIQPUIVII · pith_short_8: GYKMLDUG

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/GYKMLDUGIQPUIVIIDJ7PKWO6AJ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3614c58e86441f4455081a7ef559de024486828dce8dcc655f4f3bbefec38e26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d45964c943c83126404a7c437143a33940d9149f4253a7e6917de6bd44880c75",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-03-31T19:08:14Z",
    "title_canon_sha256": "8c668a768a6cd29c5694aaaac81761e878887cd0f3d075aa6f75ee592f86c2d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.00071",
    "kind": "arxiv",
    "version": 1
  }
}