Pith Number

pith:7I2Q6DDF

pith:2008:7I2Q6DDF5U55N5Y6Y2ZJDRGX4M

not attested not anchored not stored refs pending

Molecular-orbital-free algorithm for excited states in time-dependent perturbation theory

Anders M. N. Niklasson, Matt Challacombe, Melissa J. Lucero, Sergei Tretiak

arxiv:0805.3313 v1 · 2008-05-21 · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7I2Q6DDF5U55N5Y6Y2ZJDRGX4M}

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	2026-05-18T04:08:05.375003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa350f0c65ed3bd6f71ec6b291c4d7e33e405259503d9778cf077be8e118271a

Aliases

arxiv: 0805.3313 · arxiv_version: 0805.3313v1 · doi: 10.48550/arxiv.0805.3313 · pith_short_12: 7I2Q6DDF5U55 · pith_short_16: 7I2Q6DDF5U55N5Y6 · pith_short_8: 7I2Q6DDF

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/7I2Q6DDF5U55N5Y6Y2ZJDRGX4M \
  | 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: fa350f0c65ed3bd6f71ec6b291c4d7e33e405259503d9778cf077be8e118271a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20caa6c5cefeddb5c0bd68beb9610a198e6690704399fe3d13d0cb96ea73f77d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2008-05-21T16:40:38Z",
    "title_canon_sha256": "e65f622b0e8c758b151cf06932fba2fdc0f7f4f9d8c99c87b624e25022f9ae84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.3313",
    "kind": "arxiv",
    "version": 1
  }
}