Pith Number

pith:WVPTWPX6

pith:2018:WVPTWPX6PO6LRG4GROAAS52QQ4

not attested not anchored not stored refs pending

A reaction coefficient identification problem for fractional diffusion

Enrique Otarola, Tran Nhan Tam Quyen

arxiv:1809.10181 v2 · 2018-09-26 · math.NA · 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{WVPTWPX6PO6LRG4GROAAS52QQ4}

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	2026-05-17T23:47:30.171350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b55f3b3efe7bbcb89b868b80097750870236ce519836e3986f6899a884eabd8d

Aliases

arxiv: 1809.10181 · arxiv_version: 1809.10181v2 · doi: 10.48550/arxiv.1809.10181 · pith_short_12: WVPTWPX6PO6L · pith_short_16: WVPTWPX6PO6LRG4G · pith_short_8: WVPTWPX6

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/WVPTWPX6PO6LRG4GROAAS52QQ4 \
  | 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: b55f3b3efe7bbcb89b868b80097750870236ce519836e3986f6899a884eabd8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f405d522dfa299bfe77786fbd2ecf5f6e8240ad58f451e6bfba75c490b96e84",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-09-26T18:35:48Z",
    "title_canon_sha256": "6c2e268fb455eb3e2c6f6fe53c0176a3f48c0a68d6c6352dbcd61d58b7e9eb47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.10181",
    "kind": "arxiv",
    "version": 2
  }
}