Pith Number

pith:XHC6W3DH

pith:2012:XHC6W3DHIBPIT4TMSFRDGSDYFY

not attested not anchored not stored refs pending

Normal projective varieties of degree 5

Andrea Luigi Tironi

arxiv:1201.4508 v1 · 2012-01-21 · 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{XHC6W3DHIBPIT4TMSFRDGSDYFY}

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	2026-05-18T04:04:05.875096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9c5eb6c67405e89f26c91623348782e06a7a67e2030f02e4024ed922b01eea7

Aliases

arxiv: 1201.4508 · arxiv_version: 1201.4508v1 · doi: 10.48550/arxiv.1201.4508 · pith_short_12: XHC6W3DHIBPI · pith_short_16: XHC6W3DHIBPIT4TM · pith_short_8: XHC6W3DH

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/XHC6W3DHIBPIT4TMSFRDGSDYFY \
  | 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: b9c5eb6c67405e89f26c91623348782e06a7a67e2030f02e4024ed922b01eea7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "482dbd8449c56b4c9116580888ce278b1a29bfe783a652e238386181898e783c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-01-21T21:08:37Z",
    "title_canon_sha256": "d797f226364c18d59d58a3b03bc2b336a8bad58381295a046a600c6a6328a3be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.4508",
    "kind": "arxiv",
    "version": 1
  }
}