Pith Number

pith:FSRBA5PP

pith:2019:FSRBA5PPG2YYDFLVIGTHIN5FUG

not attested not anchored not stored refs pending

Hypersurfaces of Product Spaces with a Canonical Direction

Pedro Roitman, Ronaldo F. de Lima

arxiv:1905.12026 v2 · 2019-05-28 · 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{FSRBA5PPG2YYDFLVIGTHIN5FUG}

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	2026-05-17T23:42:41.547806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ca21075ef36b181957541a67437a5a199ab4e17ee47391cceb656f404de1be4

Aliases

arxiv: 1905.12026 · arxiv_version: 1905.12026v2 · doi: 10.48550/arxiv.1905.12026 · pith_short_12: FSRBA5PPG2YY · pith_short_16: FSRBA5PPG2YYDFLV · pith_short_8: FSRBA5PP

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/FSRBA5PPG2YYDFLVIGTHIN5FUG \
  | 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: 2ca21075ef36b181957541a67437a5a199ab4e17ee47391cceb656f404de1be4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b43292cf782211a37d1075c1191ae359addb641757476d0d8aba3c6f89bf599",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-05-28T18:45:48Z",
    "title_canon_sha256": "a91e0631022113feb9a521362d29fed293929533324907a70e6d275f4508a09d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.12026",
    "kind": "arxiv",
    "version": 2
  }
}