Pith Number

pith:WZ3HFXIN

pith:2014:WZ3HFXINL2JFJG3HAI7R2DZMX4

not attested not anchored not stored refs pending

On an inverse problem in the parabolic equation arising from groundwater pollution problem

Nguyen Huy Tuan, Nguyen Van Thinh, Tran Thanh Binh, Vo Anh Khoa

arxiv:1408.1923 v2 · 2014-08-08 · math.AP · 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{WZ3HFXINL2JFJG3HAI7R2DZMX4}

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	2026-05-18T01:24:43.967746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b67672dd0d5e92549b67023f1d0f2cbf0938a70865c7aa012479c46167c9ee1a

Aliases

arxiv: 1408.1923 · arxiv_version: 1408.1923v2 · doi: 10.48550/arxiv.1408.1923 · pith_short_12: WZ3HFXINL2JF · pith_short_16: WZ3HFXINL2JFJG3H · pith_short_8: WZ3HFXIN

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/WZ3HFXINL2JFJG3HAI7R2DZMX4 \
  | 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: b67672dd0d5e92549b67023f1d0f2cbf0938a70865c7aa012479c46167c9ee1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e75c7ef1adf4e1c032959c24fa023bcdd2744933f9a70d54b87e7834f3e45c35",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2014-08-08T17:26:53Z",
    "title_canon_sha256": "5613c21d57df6720096e723d23a8db00ff15e1f18d9db32cfa5e6fe408507f23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.1923",
    "kind": "arxiv",
    "version": 2
  }
}