Pith Number

pith:6IMK6IKV

pith:2005:6IMK6IKVHGDF42O3KRV47EFVCX

not attested not anchored not stored refs pending

The Face Semigroup Algebra of a Hyperplane Arrangement

Franco V. Saliola

arxiv:math/0511717 v2 · 2005-11-29 · math.RA · 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{6IMK6IKVHGDF42O3KRV47EFVCX}

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	2026-07-04T14:51:45.560880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f218af215539865e69db546bcf90b515db1ee0feac701b76fee707b2d64063c6

Aliases

arxiv: math/0511717 · arxiv_version: math/0511717v2 · doi: 10.48550/arxiv.math/0511717 · pith_short_12: 6IMK6IKVHGDF · pith_short_16: 6IMK6IKVHGDF42O3 · pith_short_8: 6IMK6IKV

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/6IMK6IKVHGDF42O3KRV47EFVCX \
  | 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: f218af215539865e69db546bcf90b515db1ee0feac701b76fee707b2d64063c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9add000170eb0f44d8577de342c171bd83ffe01a01392f9878bcb0f6e552693f",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "",
    "primary_cat": "math.RA",
    "submitted_at": "2005-11-29T22:07:13Z",
    "title_canon_sha256": "d19aba322b700fe8cdf895137fb4ad9a8afeccc29b864375e32a5271be02d24d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0511717",
    "kind": "arxiv",
    "version": 2
  }
}