Pith Number

pith:QXA3GHFI

pith:2025:QXA3GHFIF22JGEOJ2DA433XIA2

not attested not anchored not stored refs pending

Spiderwebs on the Sphere and an Isoperimetric Theorem

Robert Connelly, Zhen Zhang

arxiv:2505.22336 v1 · 2025-05-28 · 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{QXA3GHFIF22JGEOJ2DA433XIA2}

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	2026-07-05T11:11:13.538508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85c1b31ca82eb49311c9d0c1cdeee806ab254c8b4e66d78be0b02439c16f786e

Aliases

arxiv: 2505.22336 · arxiv_version: 2505.22336v1 · doi: 10.48550/arxiv.2505.22336 · pith_short_12: QXA3GHFIF22J · pith_short_16: QXA3GHFIF22JGEOJ · pith_short_8: QXA3GHFI

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/QXA3GHFIF22JGEOJ2DA433XIA2 \
  | 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: 85c1b31ca82eb49311c9d0c1cdeee806ab254c8b4e66d78be0b02439c16f786e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7899bd27b111320251c058eaafd38d3c3f7a7f21d92c1dc41874fab22a562a2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2025-05-28T13:23:32Z",
    "title_canon_sha256": "77f1756c2cbe0562b8a0cc033f4d49897996944a1aa62f1eb151e3a3dbfcd78f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.22336",
    "kind": "arxiv",
    "version": 1
  }
}