Pith Number

pith:5HPSI2NG

pith:2009:5HPSI2NGVXNPX6L37HEPAFAZAS

not attested not anchored not stored refs pending

Causality in scalar-Einstein waves

Mark D. Roberts

arxiv:0903.4138 v2 · 2009-03-24 · 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{5HPSI2NGVXNPX6L37HEPAFAZAS}

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.

Receipt and verification

First computed	2026-05-18T02:24:16.100734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9df2469a6addafbf97bf9c8f014190480da59f0f340ea2f970f29362d8abbf3

Aliases

arxiv: 0903.4138 · arxiv_version: 0903.4138v2 · doi: 10.48550/arxiv.0903.4138 · pith_short_12: 5HPSI2NGVXNP · pith_short_16: 5HPSI2NGVXNPX6L3 · pith_short_8: 5HPSI2NG

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/5HPSI2NGVXNPX6L37HEPAFAZAS \
  | 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: e9df2469a6addafbf97bf9c8f014190480da59f0f340ea2f970f29362d8abbf3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86377640f4e734e0319a4cf6570cde161923ac3fa69ea3af0bd38481974bb039",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-03-24T17:07:42Z",
    "title_canon_sha256": "92b943ce59b0bbec97cf97f4006db6385babeba470fc0cea26a7f1f2f5d8297a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4138",
    "kind": "arxiv",
    "version": 2
  }
}