Pith Number

pith:IL2O2L4B

pith:2013:IL2O2L4BLQ7C4VSGFJS2PKL4ZA

not attested not anchored not stored refs pending

Two equivalent Stefan's problems for the Time Fractional Diffusion Equation

Eduardo A. Santillan Marcus, Sabrina Roscani

arxiv:1306.1750 v3 · 2013-06-07 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IL2O2L4BLQ7C4VSGFJS2PKL4ZA}

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	2026-05-18T03:13:12.446840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42f4ed2f815c3e2e56462a65a7a97cc81a0aa8c7f9c21ca8f62a42bf6cb8f8b2

Aliases

arxiv: 1306.1750 · arxiv_version: 1306.1750v3 · doi: 10.48550/arxiv.1306.1750 · pith_short_12: IL2O2L4BLQ7C · pith_short_16: IL2O2L4BLQ7C4VSG · pith_short_8: IL2O2L4B

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/IL2O2L4BLQ7C4VSGFJS2PKL4ZA \
  | 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: 42f4ed2f815c3e2e56462a65a7a97cc81a0aa8c7f9c21ca8f62a42bf6cb8f8b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7407b8b933067958671548f32459a4ed2e14c28abe8f986facd20046cea9bb96",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-06-07T15:30:03Z",
    "title_canon_sha256": "d117a035f4a9db7a428160a1daf706808f976e8cfd073740f304eea052b55a11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.1750",
    "kind": "arxiv",
    "version": 3
  }
}