Pith Number

pith:TJGKIJBK

pith:2015:TJGKIJBKWLCHIOY6MMNTJUJFKF

not attested not anchored not stored refs pending

Persistence and permanence for a class of functional differential equations with infinite delay

Teresa Faria

arxiv:1504.04591 v1 · 2015-04-17 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TJGKIJBKWLCHIOY6MMNTJUJFKF}

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	2026-05-18T00:49:47.357077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a4ca4242ab2c4743b1e631b34d1255169a27f4a5989974e96ca4e35b4916301

Aliases

arxiv: 1504.04591 · arxiv_version: 1504.04591v1 · doi: 10.48550/arxiv.1504.04591 · pith_short_12: TJGKIJBKWLCH · pith_short_16: TJGKIJBKWLCHIOY6 · pith_short_8: TJGKIJBK

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/TJGKIJBKWLCHIOY6MMNTJUJFKF \
  | 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: 9a4ca4242ab2c4743b1e631b34d1255169a27f4a5989974e96ca4e35b4916301

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4a2f5ebcc129d39b992afec1a881e8426a1382f7308b1e2bbac41f6b45fe5e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2015-04-17T17:51:50Z",
    "title_canon_sha256": "4f9cc4676699f3c0f9cf24dbfa2ad9ceed94bf78aab2178587801821a5510db3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04591",
    "kind": "arxiv",
    "version": 1
  }
}