Pith Number

pith:TVKJSW7R

pith:2025:TVKJSW7RCJRCMCI4GMCFX32YQV

not attested not anchored not stored refs pending

Inverse source problem of sub-diffusion of variable exponent

Chunlong Sun, Xiangcheng Zheng, Zhiyuan Li

arxiv:2501.18228 v1 · 2025-01-30 · math.NA · cs.NA · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TVKJSW7RCJRCMCI4GMCFX32YQV}

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	2026-07-05T10:07:31.293796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d54995bf1126226091c33045bef58854626e8daeac7f0e47deeb9116177372c

Aliases

arxiv: 2501.18228 · arxiv_version: 2501.18228v1 · doi: 10.48550/arxiv.2501.18228 · pith_short_12: TVKJSW7RCJRC · pith_short_16: TVKJSW7RCJRCMCI4 · pith_short_8: TVKJSW7R

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/TVKJSW7RCJRCMCI4GMCFX32YQV \
  | 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: 9d54995bf1126226091c33045bef58854626e8daeac7f0e47deeb9116177372c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ed05877242561f463d4055d9fc99ed3e61d2e890a3470517fae11b4f413b23b",
    "cross_cats_sorted": [
      "cs.NA",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-01-30T09:34:52Z",
    "title_canon_sha256": "29918c7d6ea327d3b1bf5fb4b7b967cf3572bac179666595aea3bd3f347721fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.18228",
    "kind": "arxiv",
    "version": 1
  }
}