Pith Number

pith:FVQ7EJIR

pith:2017:FVQ7EJIRQ2UCCWSYSCECUH73DL

not attested not anchored not stored refs pending

Nonnegatively curved hypersurfaces with free boundary on a sphere

Changwei Xiong, Mohammad Ghomi

arxiv:1707.03323 v2 · 2017-07-11 · math.DG · math.GT · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FVQ7EJIRQ2UCCWSYSCECUH73DL}

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	2026-05-17T23:49:53.221483Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d61f2251186a8215a5890882a1ffb1ae2b8d08d68040fbb9ef5471585582d48

Aliases

arxiv: 1707.03323 · arxiv_version: 1707.03323v2 · doi: 10.48550/arxiv.1707.03323 · pith_short_12: FVQ7EJIRQ2UC · pith_short_16: FVQ7EJIRQ2UCCWSY · pith_short_8: FVQ7EJIR

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/FVQ7EJIRQ2UCCWSYSCECUH73DL \
  | 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: 2d61f2251186a8215a5890882a1ffb1ae2b8d08d68040fbb9ef5471585582d48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03958118abd2c7db56a4d691f64b6627a7b798ccaf99e197bc6d066b32c1a8e5",
    "cross_cats_sorted": [
      "math.GT",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-07-11T15:29:03Z",
    "title_canon_sha256": "af792e86d7cc4e1f8574964721aa2c16ab603f2ffd336c1dc0d464d8294b89bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.03323",
    "kind": "arxiv",
    "version": 2
  }
}