Pith Number

pith:HIFFHZVC

pith:2011:HIFFHZVCUJCCNI52R6FECC6KVQ

not attested not anchored not stored refs pending

Convex pencils of real quadratic forms

Antonio Lerario

arxiv:1106.4678 v3 · 2011-06-23 · math.AG · math.AT · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HIFFHZVCUJCCNI52R6FECC6KVQ}

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	2026-05-18T03:46:15.356757Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a0a53e6a2a24426a3ba8f8a410bcaac26e99066c969bdfd798846159334a82a

Aliases

arxiv: 1106.4678 · arxiv_version: 1106.4678v3 · doi: 10.48550/arxiv.1106.4678 · pith_short_12: HIFFHZVCUJCC · pith_short_16: HIFFHZVCUJCCNI52 · pith_short_8: HIFFHZVC

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/HIFFHZVCUJCCNI52R6FECC6KVQ \
  | 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: 3a0a53e6a2a24426a3ba8f8a410bcaac26e99066c969bdfd798846159334a82a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95ff726ee9bd020f99604ee546c7f351374c718655225ce88547006cb1b1dbee",
    "cross_cats_sorted": [
      "math.AT",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-06-23T10:36:27Z",
    "title_canon_sha256": "99a81d390fdbd67d519f5bc88d79a6df7e2f4a9b3383345eb3ce50291a707a49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.4678",
    "kind": "arxiv",
    "version": 3
  }
}