Pith Number

pith:MNQ2KZZL

pith:2009:MNQ2KZZLXBPN4OABHZSGCDV7GD

not attested not anchored not stored refs pending

Towards a solution of the cosmological constant problem

F.R. Klinkhamer, G.E. Volovik

arxiv:0907.4887 v6 · 2009-07-28 · hep-th · astro-ph.CO · 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{MNQ2KZZLXBPN4OABHZSGCDV7GD}

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	2026-05-18T02:34:38.358393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6361a5672bb85ede38013e64610ebf30dc29a872f055976018da221ccc063a94

Aliases

arxiv: 0907.4887 · arxiv_version: 0907.4887v6 · doi: 10.48550/arxiv.0907.4887 · pith_short_12: MNQ2KZZLXBPN · pith_short_16: MNQ2KZZLXBPN4OAB · pith_short_8: MNQ2KZZL

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/MNQ2KZZLXBPN4OABHZSGCDV7GD \
  | 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: 6361a5672bb85ede38013e64610ebf30dc29a872f055976018da221ccc063a94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "038a9e4df399ffdba6e262b68249104ffcb3994a33c679bf360561c3d7752636",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-07-28T18:15:50Z",
    "title_canon_sha256": "00ba51305e4e76b7fc974196709bd6aec9a1961bc3221977b3d6571148dd7d43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4887",
    "kind": "arxiv",
    "version": 6
  }
}