Pith Number

pith:EOQISMFI

pith:2018:EOQISMFIHOWSABV3NGITDWS35Y

not attested not anchored not stored refs pending

Berwald spaces of bounded curvature are Riemannian

Nathaphon Boonnam, Rattanasak Hama, Sorin V. Sabau

arxiv:1808.02999 v1 · 2018-08-09 · 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{EOQISMFIHOWSABV3NGITDWS35Y}

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	2026-05-18T00:08:30.463116Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23a08930a83bad2006bb699131da5bee354feb1cef0b101117f7a1c34f2a7e4c

Aliases

arxiv: 1808.02999 · arxiv_version: 1808.02999v1 · doi: 10.48550/arxiv.1808.02999 · pith_short_12: EOQISMFIHOWS · pith_short_16: EOQISMFIHOWSABV3 · pith_short_8: EOQISMFI

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/EOQISMFIHOWSABV3NGITDWS35Y \
  | 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: 23a08930a83bad2006bb699131da5bee354feb1cef0b101117f7a1c34f2a7e4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72d7f9c37ed437c1a646476eb7453d9a8deabceaa795b0d1c20433c77e511122",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-08-09T02:38:12Z",
    "title_canon_sha256": "d2db8e99a074f530c4fdb092e87e67ceff5565f3cddf0cbc57a20559920f2e47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02999",
    "kind": "arxiv",
    "version": 1
  }
}