Pith Number

pith:JP4PYDRM

pith:2016:JP4PYDRMXXMCXCYVT2XSZNDJYF

not attested not anchored not stored refs pending

Projective properties of Lorentzian surfaces

Pierre Mounoud (IMB)

arxiv:1610.01408 v2 · 2016-10-05 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JP4PYDRMXXMCXCYVT2XSZNDJYF}

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	2026-05-18T01:00:05.310465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bf8fc0e2cbdd82b8b159eaf2cb469c15520e5da0fe696d4e1a7183a6b176636

Aliases

arxiv: 1610.01408 · arxiv_version: 1610.01408v2 · doi: 10.48550/arxiv.1610.01408 · pith_short_12: JP4PYDRMXXMC · pith_short_16: JP4PYDRMXXMCXCYV · pith_short_8: JP4PYDRM

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/JP4PYDRMXXMCXCYVT2XSZNDJYF \
  | 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: 4bf8fc0e2cbdd82b8b159eaf2cb469c15520e5da0fe696d4e1a7183a6b176636

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22635eb03906b83c35732b1967c3c6f59f5e57ff4125ee9b60bc1e83ec0d414c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2016-10-05T13:22:51Z",
    "title_canon_sha256": "d33b0fd6e56a1f1d9258833c15fdca6b435683c969e2b08a0caf32c2d55e3690"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.01408",
    "kind": "arxiv",
    "version": 2
  }
}