Pith Number

pith:SKGR2NHC

pith:2012:SKGR2NHCV6OYRPPSGCRWT675KK

not attested not anchored not stored refs pending

The structure of 2-separations of infinite matroids

Elad Aigner-Horev, Luke Postle, Reinhard Diestel

arxiv:1201.1135 v2 · 2012-01-05 · 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{SKGR2NHCV6OYRPPSGCRWT675KK}

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	2026-05-18T01:56:00.213265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

928d1d34e2af9d88bdf230a369fbfd52a3c556e67e021fec7aabdf424265d55b

Aliases

arxiv: 1201.1135 · arxiv_version: 1201.1135v2 · doi: 10.48550/arxiv.1201.1135 · pith_short_12: SKGR2NHCV6OY · pith_short_16: SKGR2NHCV6OYRPPS · pith_short_8: SKGR2NHC

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/SKGR2NHCV6OYRPPSGCRWT675KK \
  | 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: 928d1d34e2af9d88bdf230a369fbfd52a3c556e67e021fec7aabdf424265d55b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ccb1b46226e353c6db08fbe0d0cbc18bcf86035a3691e0371e129689a0d4fdd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-01-05T11:47:27Z",
    "title_canon_sha256": "cffe20c8cf088e87af857a9d3c04dcfa40ec6f27c6f868ca6586f4930ab6a5e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1135",
    "kind": "arxiv",
    "version": 2
  }
}