Pith Number

pith:TKVPOWWS

pith:2015:TKVPOWWSAPURP4XDLTPSGSA626

not attested not anchored not stored refs pending

Quantum mechanics allows setting initial conditions at a cosmological singularity: Gowdy model example

S.L. Cherkas, V.L. Kalashnikov

arxiv:1504.06188 v3 · 2015-04-23 · 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{TKVPOWWSAPURP4XDLTPSGSA626}

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	2026-05-18T00:39:13.920788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9aaaf75ad203e917f2e35cdf23481ed7bcc2bd2702cee0aaee832c944d88c0dd

Aliases

arxiv: 1504.06188 · arxiv_version: 1504.06188v3 · doi: 10.48550/arxiv.1504.06188 · pith_short_12: TKVPOWWSAPUR · pith_short_16: TKVPOWWSAPURP4XD · pith_short_8: TKVPOWWS

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/TKVPOWWSAPURP4XDLTPSGSA626 \
  | 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: 9aaaf75ad203e917f2e35cdf23481ed7bcc2bd2702cee0aaee832c944d88c0dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56c4967dc2f62354b775b3b92a7aadd30fa9fed099f7f011b1cd32f63735448a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-04-23T13:58:57Z",
    "title_canon_sha256": "a95160ae0eb14ee40311933b102132fbab87fdbc3ca2c787d30a6c495191b702"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06188",
    "kind": "arxiv",
    "version": 3
  }
}