Pith Number

pith:SIZCYCZH

pith:2019:SIZCYCZH7MZQSDWKXJM7NCI3LH

not attested not anchored not stored refs pending

Positivity of Brown-York mass with quasi-positive boundary data

Luen-fai Tam, Yuguang Shi

arxiv:1901.09545 v4 · 2019-01-28 · 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{SIZCYCZH7MZQSDWKXJM7NCI3LH}

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	2026-05-17T23:48:20.028917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92322c0b27fb33090ecaba59f6891b59c597fe18e8c5e9f8b0836ad0a3b94abd

Aliases

arxiv: 1901.09545 · arxiv_version: 1901.09545v4 · doi: 10.48550/arxiv.1901.09545 · pith_short_12: SIZCYCZH7MZQ · pith_short_16: SIZCYCZH7MZQSDWK · pith_short_8: SIZCYCZH

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/SIZCYCZH7MZQSDWKXJM7NCI3LH \
  | 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: 92322c0b27fb33090ecaba59f6891b59c597fe18e8c5e9f8b0836ad0a3b94abd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d3155d84598b6419ac61569bac90338b69ab30b5f21d7e86c0427ec34c5b607",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-01-28T08:18:21Z",
    "title_canon_sha256": "48909f9c00675a30af481f4b9dcafc962c9747d8ceb589344d1e7d8e2d7d07ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09545",
    "kind": "arxiv",
    "version": 4
  }
}