Pith Number

pith:DBYJYJK7

pith:2017:DBYJYJK7CH4GFC4WX3ID7QXKBC

not attested not anchored not stored refs pending

Directional Total Generalized Variation Regularization

Kim Knudsen, Rasmus Dalgas Kongskov, Yiqiu Dong

arxiv:1701.02675 v5 · 2017-01-10 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DBYJYJK7CH4GFC4WX3ID7QXKBC}

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	2026-05-18T00:37:36.141152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18709c255f11f8628b96bed03fc2ea08928ec1d8154470f2d2622f045f39101a

Aliases

arxiv: 1701.02675 · arxiv_version: 1701.02675v5 · doi: 10.48550/arxiv.1701.02675 · pith_short_12: DBYJYJK7CH4G · pith_short_16: DBYJYJK7CH4GFC4W · pith_short_8: DBYJYJK7

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/DBYJYJK7CH4GFC4WX3ID7QXKBC \
  | 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: 18709c255f11f8628b96bed03fc2ea08928ec1d8154470f2d2622f045f39101a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09ec98512eef7a18f914238fc3a7c5e11193ae53b863392ba91d7c5455e0895d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-01-10T16:40:46Z",
    "title_canon_sha256": "efc2389b57f4d9ea8d5989a2497d0157200de5c303c1bbf268820f0f5f82b5d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02675",
    "kind": "arxiv",
    "version": 5
  }
}