Pith Number

pith:JQQECSHZ

pith:2013:JQQECSHZUPSA4VUMLB3HWQT7FB

not attested not anchored not stored refs pending

The Behavior of the Free Boundary for Reaction-Diffusion Equations with Convection in an Exterior Domain with Neumann or Dirichlet Boundary Condition

Ross G. Pinsky

arxiv:1312.3431 v2 · 2013-12-12 · 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{JQQECSHZUPSA4VUMLB3HWQT7FB}

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	2026-05-18T02:58:34.388803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c204148f9a3e40e568c58767b427f285803ff39ad357a9fdfc1484e8b686268

Aliases

arxiv: 1312.3431 · arxiv_version: 1312.3431v2 · doi: 10.48550/arxiv.1312.3431 · pith_short_12: JQQECSHZUPSA · pith_short_16: JQQECSHZUPSA4VUM · pith_short_8: JQQECSHZ

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/JQQECSHZUPSA4VUMLB3HWQT7FB \
  | 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: 4c204148f9a3e40e568c58767b427f285803ff39ad357a9fdfc1484e8b686268

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08e5203d8fbf311bf8ccc51a9b818f174aa5fa93dbbece904da39dd6c20a0833",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-12-12T10:12:23Z",
    "title_canon_sha256": "5cb097bb78742eb6ce407e50276241d6661105505acc2ac6ca5ce71cff098a14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.3431",
    "kind": "arxiv",
    "version": 2
  }
}