Pith Number

pith:FSU6MA4F

pith:2018:FSU6MA4FNZVKAMERT3JSQU3Q2P

not attested not anchored not stored refs pending

Computing the symmetries of a ruled rational surface

Alc\'azar Arribas, Emily Quintero, Juan Gerardo

arxiv:1806.09829 v1 · 2018-06-26 · 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{FSU6MA4FNZVKAMERT3JSQU3Q2P}

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	2026-05-18T00:12:23.206438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ca9e603856e6aa030919ed3285370d3d008be331daea9e3995c314419528179

Aliases

arxiv: 1806.09829 · arxiv_version: 1806.09829v1 · doi: 10.48550/arxiv.1806.09829 · pith_short_12: FSU6MA4FNZVK · pith_short_16: FSU6MA4FNZVKAMER · pith_short_8: FSU6MA4F

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/FSU6MA4FNZVKAMERT3JSQU3Q2P \
  | 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: 2ca9e603856e6aa030919ed3285370d3d008be331daea9e3995c314419528179

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "383feacabbdd412a8744f16747b86497b6ba32949d49b9c9c4afa85032a16cd1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-06-26T07:55:31Z",
    "title_canon_sha256": "0bd29a727282983e5172d05b35f8d08201939706a0d98799f9171990984e32e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.09829",
    "kind": "arxiv",
    "version": 1
  }
}