Pith Number

pith:RXNQ5MW5

pith:2010:RXNQ5MW5RWXA6G7MNFDD3TGOWN

not attested not anchored not stored refs pending

K-classes of matroids and equivariant localization

Alex Fink, David E Speyer

arxiv:1004.2403 v2 · 2010-04-14 · 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{RXNQ5MW5RWXA6G7MNFDD3TGOWN}

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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.

Cited by

1 paper in Pith

Graph theoretic properties of Speyer's matroid polynomial $g_M(t)$

Receipt and verification

First computed	2026-07-05T00:26:52.546181Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ddb0eb2dd8dae0f1bec69463dccceb3667b9cd5d1a3eeccdb0bb1cac06f403c

Aliases

arxiv: 1004.2403 · arxiv_version: 1004.2403v2 · doi: 10.48550/arxiv.1004.2403 · pith_short_12: RXNQ5MW5RWXA · pith_short_16: RXNQ5MW5RWXA6G7M · pith_short_8: RXNQ5MW5

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/RXNQ5MW5RWXA6G7MNFDD3TGOWN \
  | 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: 8ddb0eb2dd8dae0f1bec69463dccceb3667b9cd5d1a3eeccdb0bb1cac06f403c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ba3295285cbfeba18626e54c2643f451bcd7d4c3f21f354128d643476bc885e",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-04-14T14:20:11Z",
    "title_canon_sha256": "388b6e220b0cd55d35a21ddc73430a588cc3cb9494a31ff1ef91e38072ef3437"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2403",
    "kind": "arxiv",
    "version": 2
  }
}