Pith Number

pith:PZNZFBOG

pith:2018:PZNZFBOGKVR4TVQCW5CW7SVSG4

not attested not anchored not stored refs pending

The topology of arrangements of ideal type

Gerhard Roehrle, Nils Amend

arxiv:1801.07157 v3 · 2018-01-22 · math.AT · 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{PZNZFBOGKVR4TVQCW5CW7SVSG4}

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	2026-05-18T00:02:28.020675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e5b9285c65563c9d602b7456fcab23706e74b4ea5e06e4609edaf39c5284961

Aliases

arxiv: 1801.07157 · arxiv_version: 1801.07157v3 · doi: 10.48550/arxiv.1801.07157 · pith_short_12: PZNZFBOGKVR4 · pith_short_16: PZNZFBOGKVR4TVQC · pith_short_8: PZNZFBOG

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/PZNZFBOGKVR4TVQCW5CW7SVSG4 \
  | 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: 7e5b9285c65563c9d602b7456fcab23706e74b4ea5e06e4609edaf39c5284961

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0dabcf6442e5fba9c7081559030343941193caf21860218bdd8070e443e04d94",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-01-22T16:00:45Z",
    "title_canon_sha256": "78a8c4f54bee177735aca4ee1ef78a7bba618de7c3bd557dc7158818a9946d5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07157",
    "kind": "arxiv",
    "version": 3
  }
}