Pith Number

pith:KFK7MHSJ

pith:2025:KFK7MHSJZOCDUTXKFLMKCX4L5C

not attested not anchored not stored refs pending

Lifespan estimate for the semilinear regular Euler-Poisson-Darboux-Tricomi equation

Fei Guo, Yuequn Li

arxiv:2502.02084 v1 · 2025-02-04 · 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{KFK7MHSJZOCDUTXKFLMKCX4L5C}

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	2026-07-05T10:09:23.534562Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5155f61e49cb843a4eea2ad8a15f8be886827d03f30830ca8f69c20f59511847

Aliases

arxiv: 2502.02084 · arxiv_version: 2502.02084v1 · doi: 10.48550/arxiv.2502.02084 · pith_short_12: KFK7MHSJZOCD · pith_short_16: KFK7MHSJZOCDUTXK · pith_short_8: KFK7MHSJ

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/KFK7MHSJZOCDUTXKFLMKCX4L5C \
  | 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: 5155f61e49cb843a4eea2ad8a15f8be886827d03f30830ca8f69c20f59511847

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25e96a338d089bb058d5ed079ff01f8b0cf3053489338babef17260052046cf2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2025-02-04T08:05:22Z",
    "title_canon_sha256": "e384f3999f25080447ed97042845d68d192f282b98caa1cc7cd160509ea7a1a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.02084",
    "kind": "arxiv",
    "version": 1
  }
}