Pith Number

pith:MFN5R43A

pith:2018:MFN5R43ACJY7TJH6DLDYSRAFQS

not attested not anchored not stored refs pending

Classification of the relative positions between an ellipsoid and an elliptic paraboloid

Ana D. Tarr\'io-Tobar, Mar\'ia Jos\'e Pereira-S\'aez, Mar\'ia Jos\'e Souto-Salorio, Miguel Brozos-V\'azquez

arxiv:1806.06805 v1 · 2018-06-14 · cs.CG · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MFN5R43ACJY7TJH6DLDYSRAFQS}

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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	2026-05-18T00:12:59.064399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

615bd8f3601271f9a4fe1ac789440584b6ada9249e43fccb19e2edd50b151d60

Aliases

arxiv: 1806.06805 · arxiv_version: 1806.06805v1 · doi: 10.48550/arxiv.1806.06805 · pith_short_12: MFN5R43ACJY7 · pith_short_16: MFN5R43ACJY7TJH6 · pith_short_8: MFN5R43A

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/MFN5R43ACJY7TJH6DLDYSRAFQS \
  | 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: 615bd8f3601271f9a4fe1ac789440584b6ada9249e43fccb19e2edd50b151d60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a97b0e6d743676c26621041bfd4093fc352f3beb43041aa9c748a2cc8634a226",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2018-06-14T10:13:52Z",
    "title_canon_sha256": "0f6ee9d4058ccd60a657cdd712ec00ca8fde660d69f5a695a60262ecf1a8c7ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.06805",
    "kind": "arxiv",
    "version": 1
  }
}