Pith Number

pith:CBBPKCZ7

pith:2018:CBBPKCZ7YW23WC5GLSTYHZ3BIA

not attested not anchored not stored refs pending

Multiple orthogonal geodesic chords in nonconvex Riemannian disks using obstacles

Fabio Giannoni, Paolo Piccione, Roberto Giamb\`o

arxiv:1807.00887 v1 · 2018-07-02 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CBBPKCZ7YW23WC5GLSTYHZ3BIA}

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	2026-05-18T00:11:46.113598Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1042f50b3fc5b5bb0ba65ca783e7614004c565edb8a10cd46bdd1289f26d1af7

Aliases

arxiv: 1807.00887 · arxiv_version: 1807.00887v1 · doi: 10.48550/arxiv.1807.00887 · pith_short_12: CBBPKCZ7YW23 · pith_short_16: CBBPKCZ7YW23WC5G · pith_short_8: CBBPKCZ7

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/CBBPKCZ7YW23WC5GLSTYHZ3BIA \
  | 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: 1042f50b3fc5b5bb0ba65ca783e7614004c565edb8a10cd46bdd1289f26d1af7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "811b5347a478f6412cc91800e52391ece239774cb52d7dce392cacc7876def17",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2018-07-02T21:06:06Z",
    "title_canon_sha256": "5d5e2bd504445bf1ab6bb6f4bf3bb1eb7c4dab0dc92faae4afaf2d4052650f63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00887",
    "kind": "arxiv",
    "version": 1
  }
}