Pith Number

pith:HFW5TFWU

pith:2011:HFW5TFWUGGW2AHEBXBJL4LWSUT

not attested not anchored not stored refs pending

New examples of defective secant varieties of Segre-Veronese varieties

Hirotachi Abo, Maria Chiara Brambilla

arxiv:1101.3202 v1 · 2011-01-17 · 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{HFW5TFWUGGW2AHEBXBJL4LWSUT}

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	2026-05-18T03:41:56.690232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

396dd996d431ada01c81b852be2ed2a4db2975228df257968ba0b5a994d8523f

Aliases

arxiv: 1101.3202 · arxiv_version: 1101.3202v1 · doi: 10.48550/arxiv.1101.3202 · pith_short_12: HFW5TFWUGGW2 · pith_short_16: HFW5TFWUGGW2AHEB · pith_short_8: HFW5TFWU

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/HFW5TFWUGGW2AHEBXBJL4LWSUT \
  | 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: 396dd996d431ada01c81b852be2ed2a4db2975228df257968ba0b5a994d8523f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91cbc8220d8e7810dba1f678845b7b33a29d995cfa842fc65ec29159ee6d5daa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-01-17T13:24:16Z",
    "title_canon_sha256": "9ed87c1dcc0169d9a42e26210139c5e12d5b3a09d371966587352b60fc2286fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.3202",
    "kind": "arxiv",
    "version": 1
  }
}