Pith Number

pith:NHCFZHVQ

pith:2016:NHCFZHVQSXU7DW3H2ICSL6TPQI

not attested not anchored not stored refs pending

On the derivation of several second order partial differential equations from a generalization of the Einstein equation

Makoto Nakamura

arxiv:1603.04543 v1 · 2016-03-15 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NHCFZHVQSXU7DW3H2ICSL6TPQI}

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	2026-05-18T01:19:04.621015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69c45c9eb095e9f1db67d20525fa6f82170776dda2d692bcd11ea881a620b076

Aliases

arxiv: 1603.04543 · arxiv_version: 1603.04543v1 · doi: 10.48550/arxiv.1603.04543 · pith_short_12: NHCFZHVQSXU7 · pith_short_16: NHCFZHVQSXU7DW3H · pith_short_8: NHCFZHVQ

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/NHCFZHVQSXU7DW3H2ICSL6TPQI \
  | 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: 69c45c9eb095e9f1db67d20525fa6f82170776dda2d692bcd11ea881a620b076

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b43ec6e3bdba006dae8eeaeb1241c251ff9ae3252470944b7a35b06b4b289b67",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2016-03-15T03:33:08Z",
    "title_canon_sha256": "194c2ca717bb236d0a84d2365874319aa37192c78e268397c328cf7dd3df4d35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.04543",
    "kind": "arxiv",
    "version": 1
  }
}