Pith Number

pith:2EVS4EU2

pith:2025:2EVS4EU2ST7EORZSKJ3N4JL576

not attested not anchored not stored refs pending

Deep asymptotic expansion method for solving singularly perturbed time-dependent reaction-advection-diffusion equations

Bangti Jin, Dmitrii Chaikovskii, Qiao Zhu, Ye Zhang

arxiv:2505.23002 v2 · 2025-05-29 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2EVS4EU2ST7EORZSKJ3N4JL576}

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	2026-07-05T12:05:17.134553Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d12b2e129a94fe4747325276de257dff9b4b604383d0fb0771f985a1b0e132ba

Aliases

arxiv: 2505.23002 · arxiv_version: 2505.23002v2 · doi: 10.48550/arxiv.2505.23002 · pith_short_12: 2EVS4EU2ST7E · pith_short_16: 2EVS4EU2ST7EORZS · pith_short_8: 2EVS4EU2

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/2EVS4EU2ST7EORZSKJ3N4JL576 \
  | 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: d12b2e129a94fe4747325276de257dff9b4b604383d0fb0771f985a1b0e132ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7f1a7755e133a36384145689298be427a8158afc4a9268ab442465f3300bc07",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-05-29T02:22:38Z",
    "title_canon_sha256": "2cf8bbf01b6a0bb88b425ced4e34f0b46c7c86d95e35d4d5991fa9ce22b11ccb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.23002",
    "kind": "arxiv",
    "version": 2
  }
}