Pith Number

pith:PTX3WVGH

pith:2014:PTX3WVGHYY5DMFF5SIGAV3YZPA

not attested not anchored not stored refs pending

On the intersection conjecture for infinite trees of matroids

Johannes Carmesin, Nathan Bowler

arxiv:1404.6067 v1 · 2014-04-24 · math.CO · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PTX3WVGHYY5DMFF5SIGAV3YZPA}

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	2026-05-18T02:53:18.460550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cefbb54c7c63a3614bd920c0aef197828566ef4f7d8d5d63ac484003aa2a5e9

Aliases

arxiv: 1404.6067 · arxiv_version: 1404.6067v1 · doi: 10.48550/arxiv.1404.6067 · pith_short_12: PTX3WVGHYY5D · pith_short_16: PTX3WVGHYY5DMFF5 · pith_short_8: PTX3WVGH

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/PTX3WVGHYY5DMFF5SIGAV3YZPA \
  | 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: 7cefbb54c7c63a3614bd920c0aef197828566ef4f7d8d5d63ac484003aa2a5e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f04536419a7efe45812b08ab1847e504037cd8baf7e3c202dbb2f5fc884b770",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-04-24T09:47:00Z",
    "title_canon_sha256": "ff34ec8fd15cd2e35fd172beb0c059688290f44a379b31d816480144fff02417"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.6067",
    "kind": "arxiv",
    "version": 1
  }
}