Pith Number

pith:EQIGL4OC

pith:2018:EQIGL4OCCMGL2NJI6XMQKQF35X

not attested not anchored not stored refs pending

Invariant surfaces in Euclidean space with a log-linear density

Rafael L\'opez

arxiv:1802.07987 v1 · 2018-02-22 · 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{EQIGL4OCCMGL2NJI6XMQKQF35X}

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	2026-05-18T00:22:45.922553Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

241065f1c2130cbd3528f5d90540bbedef928abdd447e0d55c7a1a2788fd44b4

Aliases

arxiv: 1802.07987 · arxiv_version: 1802.07987v1 · doi: 10.48550/arxiv.1802.07987 · pith_short_12: EQIGL4OCCMGL · pith_short_16: EQIGL4OCCMGL2NJI · pith_short_8: EQIGL4OC

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/EQIGL4OCCMGL2NJI6XMQKQF35X \
  | 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: 241065f1c2130cbd3528f5d90540bbedef928abdd447e0d55c7a1a2788fd44b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f75fc0069e3e23ceef2206099ec816395d933cd953c4ad3d629f4ca224388f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-02-22T11:38:57Z",
    "title_canon_sha256": "50d75b436aec349dd8ef3829e6caf2a02d15e43c24ec999a1e1ef63eb267ed1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07987",
    "kind": "arxiv",
    "version": 1
  }
}