Pith Number

pith:EX7K5YW5

pith:2013:EX7K5YW5PMMPOTORBHBEZCRD5R

not attested not anchored not stored refs pending

On inductively free Restrictions of Reflection Arrangements

Gerhard Roehrle, Nils Amend, Torsten Hoge

arxiv:1310.1708 v2 · 2013-10-07 · math.GR · 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{EX7K5YW5PMMPOTORBHBEZCRD5R}

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	2026-05-18T02:47:15.994712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25feaee2dd7b18f74dd109c24c8a23ec7c69644b2f69b7c9dcf995d45c81fb7a

Aliases

arxiv: 1310.1708 · arxiv_version: 1310.1708v2 · doi: 10.48550/arxiv.1310.1708 · pith_short_12: EX7K5YW5PMMP · pith_short_16: EX7K5YW5PMMPOTOR · pith_short_8: EX7K5YW5

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/EX7K5YW5PMMPOTORBHBEZCRD5R \
  | 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: 25feaee2dd7b18f74dd109c24c8a23ec7c69644b2f69b7c9dcf995d45c81fb7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d12f14bba775f960e6075f2837dd726177a1c9f243cb23214203012ea1cd231",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2013-10-07T09:09:07Z",
    "title_canon_sha256": "6477f116b5ca5aacf59180a022cb42fdc36d758c6fe1fe98c7bb32d670763ae0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1708",
    "kind": "arxiv",
    "version": 2
  }
}