Pith Number

pith:R5GRUOA7

pith:2014:R5GRUOA7OQBVEHJUYDRBOXOZMD

not attested not anchored not stored refs pending

Euler sequence for complete smooth k*-surfaces

Antonio Laface, Manuel Melo

arxiv:1405.7776 v1 · 2014-05-30 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R5GRUOA7OQBVEHJUYDRBOXOZMD}

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	2026-05-18T02:50:49.869192Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f4d1a381f7403521d34c0e2175dd960ffc27a842f48f33613e055275b7a3a65

Aliases

arxiv: 1405.7776 · arxiv_version: 1405.7776v1 · doi: 10.48550/arxiv.1405.7776 · pith_short_12: R5GRUOA7OQBV · pith_short_16: R5GRUOA7OQBVEHJU · pith_short_8: R5GRUOA7

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/R5GRUOA7OQBVEHJUYDRBOXOZMD \
  | 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: 8f4d1a381f7403521d34c0e2175dd960ffc27a842f48f33613e055275b7a3a65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4bd4b1cacad69f66f9c38658a2a635a9c9d2a334d308d599b73a670fbe3da8ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-05-30T05:01:45Z",
    "title_canon_sha256": "afd145276cc1ba8d95b6f6b5f4e502215c29b116953c6db8a9c43e513b2b123c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.7776",
    "kind": "arxiv",
    "version": 1
  }
}