Pith Number

pith:QF37WCFT

pith:2017:QF37WCFTT3VW6M7XWRIUWMSKBR

not attested not anchored not stored refs pending

Centers of disks in Riemannian manifolds

Igor Belegradek, Mohammad Ghomi

arxiv:1706.08135 v3 · 2017-06-25 · math.DG · math.GN · 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{QF37WCFTT3VW6M7XWRIUWMSKBR}

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	2026-05-17T23:40:43.916122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8177fb08b39eeb6f33f7b4514b324a0c53b45605567a90a80ca67f40acd4b3c8

Aliases

arxiv: 1706.08135 · arxiv_version: 1706.08135v3 · doi: 10.48550/arxiv.1706.08135 · pith_short_12: QF37WCFTT3VW · pith_short_16: QF37WCFTT3VW6M7X · pith_short_8: QF37WCFT

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/QF37WCFTT3VW6M7XWRIUWMSKBR \
  | 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: 8177fb08b39eeb6f33f7b4514b324a0c53b45605567a90a80ca67f40acd4b3c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23aa491e639bf62921569d11af4cdf7268005c10ffa2b0564cb8831416fa5f4e",
    "cross_cats_sorted": [
      "math.GN",
      "math.GT",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-06-25T16:34:56Z",
    "title_canon_sha256": "4d307aa1c2b2c7b712293de591c78495673d73f697e3a60b16f7d119578273a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.08135",
    "kind": "arxiv",
    "version": 3
  }
}