Pith Number

pith:R3XF332W

pith:2009:R3XF332WB7VG7O2RH5K6OWWTPI

not attested not anchored not stored refs pending

Equations defining secant varieties: geometry and computation

Jessica Sidman, Peter Vermeire

arxiv:0910.0989 v4 · 2009-10-06 · math.AG · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R3XF332WB7VG7O2RH5K6OWWTPI}

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	2026-05-18T04:04:04.785771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8eee5def560fea6fbb513f55e75ad37a0eb03a86b7315ee5c51a159e78beb44e

Aliases

arxiv: 0910.0989 · arxiv_version: 0910.0989v4 · doi: 10.48550/arxiv.0910.0989 · pith_short_12: R3XF332WB7VG · pith_short_16: R3XF332WB7VG7O2R · pith_short_8: R3XF332W

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/R3XF332WB7VG7O2RH5K6OWWTPI \
  | 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: 8eee5def560fea6fbb513f55e75ad37a0eb03a86b7315ee5c51a159e78beb44e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26e14ea1a99c0cc18f5e59f1b52f6140a671d35139af82481ac70a0df4cf635d",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-10-06T12:51:06Z",
    "title_canon_sha256": "0fd579af956033f59fe1478ab60d8dd0cecfa57b6fec674f0541d0950b93b354"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.0989",
    "kind": "arxiv",
    "version": 4
  }
}