Pith Number

pith:4YTSTQV5

pith:2016:4YTSTQV5NXNI7LZID7XSGE2RWA

not attested not anchored not stored refs pending

Variable Total Variation Regularization for Backward Time-Space Fractional Diffusion Problem

Jigen Peng, Jinghuai Gao, Junxiong Jia, Yujiao Li

arxiv:1601.04200 v2 · 2016-01-16 · 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{4YTSTQV5NXNI7LZID7XSGE2RWA}

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	2026-05-18T01:14:17.460400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e62729c2bd6dda8faf281fef231351b02a37a4d37f2d766c2cf4caf6905eb06c

Aliases

arxiv: 1601.04200 · arxiv_version: 1601.04200v2 · doi: 10.48550/arxiv.1601.04200 · pith_short_12: 4YTSTQV5NXNI · pith_short_16: 4YTSTQV5NXNI7LZI · pith_short_8: 4YTSTQV5

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/4YTSTQV5NXNI7LZID7XSGE2RWA \
  | 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: e62729c2bd6dda8faf281fef231351b02a37a4d37f2d766c2cf4caf6905eb06c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afa946bf189cbc10afe88aa9299192ab4b150a1f192858cee1e2498ac687cac2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-01-16T19:26:22Z",
    "title_canon_sha256": "482ab81b61c84049378bae443bbb50f512d45133103b037b1d8524d384e43200"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.04200",
    "kind": "arxiv",
    "version": 2
  }
}