Pith Number

pith:OVT7MHXK

pith:2010:OVT7MHXKDMSRRHTY5NGKWPX4VG

not attested not anchored not stored refs pending

Isotropical Linear Spaces and Valuated Delta-Matroids

Felipe Rinc\'on

arxiv:1004.4950 v1 · 2010-04-28 · math.CO · 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{OVT7MHXKDMSRRHTY5NGKWPX4VG}

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	2026-05-18T03:31:45.317221Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7567f61eea1b25189e78eb4cab3efca986c348ceb79e583438858120bd8632c0

Aliases

arxiv: 1004.4950 · arxiv_version: 1004.4950v1 · doi: 10.48550/arxiv.1004.4950 · pith_short_12: OVT7MHXKDMSR · pith_short_16: OVT7MHXKDMSRRHTY · pith_short_8: OVT7MHXK

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/OVT7MHXKDMSRRHTY5NGKWPX4VG \
  | 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: 7567f61eea1b25189e78eb4cab3efca986c348ceb79e583438858120bd8632c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8637deb5b2fe6e31d40dbb248fd1911f9664597d943b12e5d27744c5d1e632c3",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-04-28T04:16:01Z",
    "title_canon_sha256": "a86e7e3575c6583d20a812d7aa47b490b6c1574de12167b7e04c8e91cccec138"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.4950",
    "kind": "arxiv",
    "version": 1
  }
}