Pith Number

pith:NQBVKZMT

pith:2019:NQBVKZMTNRQBBIB5SHEVMNUZ7M

not attested not anchored not stored refs pending

Reconstruction of unknown cavity by single measurement

Gen Nakamura, Haibing Wang, Yi-Hsuan Lin

arxiv:1904.00999 v1 · 2019-03-30 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NQBVKZMTNRQBBIB5SHEVMNUZ7M}

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	2026-05-17T23:49:38.139966Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c035565936c6010a03d91c9563699fb020803a2e6c65b66c07906c718eddead

Aliases

arxiv: 1904.00999 · arxiv_version: 1904.00999v1 · doi: 10.48550/arxiv.1904.00999 · pith_short_12: NQBVKZMTNRQB · pith_short_16: NQBVKZMTNRQBBIB5 · pith_short_8: NQBVKZMT

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/NQBVKZMTNRQBBIB5SHEVMNUZ7M \
  | 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: 6c035565936c6010a03d91c9563699fb020803a2e6c65b66c07906c718eddead

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7519655d0cdc785b7b89856665249a9a507b2b1e385a76835d906d42190d6cf8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-03-30T14:42:36Z",
    "title_canon_sha256": "3c16a7d178463529626c4af58dcc3ac3d4c63a4dee67b5678490d98ca7722946"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.00999",
    "kind": "arxiv",
    "version": 1
  }
}