Pith Number

pith:FDEBD6GI

pith:2012:FDEBD6GIWHDXN5TCA3LNPDDQYV

not attested not anchored not stored refs pending

Total Variation Denoising on Hexagonal Grids

Clemens Kirisits

arxiv:1204.3855 v1 · 2012-04-17 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FDEBD6GIWHDXN5TCA3LNPDDQYV}

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	2026-05-18T03:57:39.382607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28c811f8c8b1c776f66206d6d78c70c5490024919463812c8a3ad167fb786bf6

Aliases

arxiv: 1204.3855 · arxiv_version: 1204.3855v1 · doi: 10.48550/arxiv.1204.3855 · pith_short_12: FDEBD6GIWHDX · pith_short_16: FDEBD6GIWHDXN5TC · pith_short_8: FDEBD6GI

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/FDEBD6GIWHDXN5TCA3LNPDDQYV \
  | 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: 28c811f8c8b1c776f66206d6d78c70c5490024919463812c8a3ad167fb786bf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9a4ff8e5176d5cd97f1593ffbd9989d4b11cdd51f0e85c290425d8e093c7eed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-04-17T17:37:22Z",
    "title_canon_sha256": "1dbacd44d1d934e875ba9bb1ffecd5be922c5be1f747e9004b599c9a1ba3c35f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.3855",
    "kind": "arxiv",
    "version": 1
  }
}