Pith Number

pith:HLAAYFA5

pith:2018:HLAAYFA5K23OC4PLYU7TBY3XKM

not attested not anchored not stored refs pending

On curvature of surfaces immersed in normed spaces

Horst Martini, Ralph Teixeira, Vitor Balestro

arxiv:1805.02045 v1 · 2018-05-05 · 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{HLAAYFA5K23OC4PLYU7TBY3XKM}

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	2026-05-18T00:16:41.127308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ac00c141d56b6e171ebc53f30e37753203fb9d6686645135715f829b98df28b

Aliases

arxiv: 1805.02045 · arxiv_version: 1805.02045v1 · doi: 10.48550/arxiv.1805.02045 · pith_short_12: HLAAYFA5K23O · pith_short_16: HLAAYFA5K23OC4PL · pith_short_8: HLAAYFA5

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/HLAAYFA5K23OC4PLYU7TBY3XKM \
  | 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: 3ac00c141d56b6e171ebc53f30e37753203fb9d6686645135715f829b98df28b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24f77ce75c4e93073bf7aaea1fe348896c265db8d4b4d546d943b0cabd89ae23",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-05-05T11:39:54Z",
    "title_canon_sha256": "3837670bd0f77a94f0424871e2d2f5ea1c53419893ba77ae44ff490cdf0a9c61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.02045",
    "kind": "arxiv",
    "version": 1
  }
}