Pith Number

pith:AP2HJ3JX

pith:1997:AP2HJ3JXIR3ZNEOFOXUY5ZYB76

not attested not anchored not stored refs pending

A Superluminal Subway: The Krasnikov Tube

Allen E. Everett, Thomas A. Roman

arxiv:gr-qc/9702049 v1 · 1997-02-25 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AP2HJ3JXIR3ZNEOFOXUY5ZYB76}

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

Warp Drive in a De Sitter Universe

Receipt and verification

First computed	2026-05-18T01:08:07.891705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03f474ed3744779691c575e98ee701ff881e367d28ae19097ca006a49904bfef

Aliases

arxiv: gr-qc/9702049 · arxiv_version: gr-qc/9702049v1 · doi: 10.48550/arxiv.gr-qc/9702049 · pith_short_12: AP2HJ3JXIR3Z · pith_short_16: AP2HJ3JXIR3ZNEOF · pith_short_8: AP2HJ3JX

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/AP2HJ3JXIR3ZNEOFOXUY5ZYB76 \
  | 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: 03f474ed3744779691c575e98ee701ff881e367d28ae19097ca006a49904bfef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf1c4c4567df9bb30b5de3da9f3f309a5759ef3e30ff880a934c2815aa433d09",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-02-25T00:22:54Z",
    "title_canon_sha256": "80590124d42a86df0817308ce5726b35ac2d95e67714f9571fbc60958e1a4f9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9702049",
    "kind": "arxiv",
    "version": 1
  }
}