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                                                                    Exhibit 4.13


Certificate No:  105

WARRANT TO SUBSCRIBE FOR SHARES

GENTIA SOFTWARE PLC

(Incorporated under the Companies Act 1985 No 2857046)

Warrant to subscribe for 16,218 ordinary shares of 15 pence each

THIS IS TO CERTIFY that Pulsar Technology Fund of C/o W.S. Walker & Company, PO
Box 265GT, Walker House, Mary Street, George Town, Grand Cayman is the
registered holder of a warrant to subscribe for 16,218 ordinary shares of 15
pence each in Gentia Software plc (the "Company") subject to the memorandum and
articles of association of the Company and otherwise on the terms and conditions
set out overleaf which provide, inter alia, for adjustment to the number of
shares subject to the Warrant and to the Warrant Price (as defined overleaf) in
certain circumstances.

EXECUTED as a deed by the Company on 9th December 1999.


SIGNED as a deed and DELIVERED by
GENTIA SOFTWARE PLC acting by a Director
and the Secretary/two Directors:


/s/ Steve Fluin Director
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/s/ Nicholas P.S. Bray Director/Secretary
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IMPORTANT

(1)  The Warrant evidenced by this Certificate is exercisable for a period of
     seven years after the date of this Certificate and thereafter up to and
     including 9th December 2006 by completion of the Notice of Exercise set out
     below and lodgement of this Certificate at the then registered office of
     the Company together with the appropriate payment.


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NOTICE OF EXERCISE

To the directors of Gentia Software plc

I/We hereby exercise my/our Warrant evidenced by this Certificate to subscribe
for ** Ordinary Shares of 15p each in your Company and attach a cheque for US$

Signed:



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We request that a certificate for the said Ordinary Shares and a balance
certificate in respect of the Warrant be sent by post to us at our risk at the
first address shown or to the agent lodging this Certificate.

Signed:



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__________________________

**   Please complete. If no number is inserted the Notice will be deemed to
     relate to all the shares subject to the Warrant.


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TERMS AND CONDITIONS

1.   In these terms and conditions:

     "Company" means Gentia Software plc (registered number 2857046);

     "Final Exercise Date" means the earlier of 9th December 2006 and the
     expiration of a notice given by the Company pursuant to paragraph 3 below;

     "Ordinary Shares" means ordinary shares of 15p each in the capital of the
     Company;

     "Registered Holder" means Pulsar Technology Fund of C/o W.S. Walker &
     Company, PO Box 265GT, Walker House, Mary Street, George Town, Grand
     Cayman;

     "this Warrant" means the warrant, evidenced by this Certificate, to
     subscribe for the number of Ordinary Shares (subject to variation as
     specified in this Warrant) specified on the face of this Certificate;

     "Warrant Price" means the price per share at which the Registered Holder is
     entitled to subscribe for the Ordinary Shares which are subject to this
     Warrant.

2.   This Warrant is held subject to the memorandum and articles of association
     of the Company and otherwise on these terms and conditions which are
     binding upon the Company and the Registered Holder and all persons claiming
     through or under them respectively. This Warrant will be registered and the
     subscription rights represented thereby will be transferable.

3.   The Registered Holder shall have the right upon exercise of this Warrant to
     subscribe in cash for Ordinary Shares. This Warrant is exercisable by the
     Registered Holder in whole or in part at any time and from time to time
     during a period from the date of this Certificate up to and including 9th
     December 2006 PROVIDED THAT if at any time this Warrant has been exercised
     in respect of three fifths or more of the ordinary shares which are the
     subject of this Warrant the Company may by thirty days' written notice to
     the Registered Holder may require it to exercise this Warrant in respect of
     any remaining shares the subject thereof. At midnight on the said date or
     after the expiration of the said notice (whichever is earlier) this Warrant
     shall become null and void and of no effect.

4.   Subject as hereinafter mentioned, the Warrant Price is US$4.625 per
     Ordinary Share.


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5.   In order to exercise this Warrant the Notice of Exercise must be completed
     and signed by the Registered Holder and lodged at the then registered
     office of the Company together with a payment to the Company equal to the
     Warrant Price multiplied by the number of Ordinary Shares in respect of
     which this Warrant is exercised. Any Notice of Exercise shall be
     irrevocable without the written consent of the Company once it has been
     lodged.

6.   If this Warrant is exercised before the Final Exercise Date in respect of
     part only of the Ordinary Shares the subject of this Warrant, a certificate
     in respect of the balance will be issued by the Company to the Registered
     Holder.

7.   Ordinary Shares in respect of which this Warrant is exercised will be
     issued only to the Registered Holder.

8.   Ordinary Shares issued pursuant to the exercise of this Warrant will rank
     pari passu in all respects from the date of issue with the remaining
     Ordinary Shares then in issue except that they will not rank for dividends
     or other distributions declared, made or paid on or after the date of issue
     in respect of a financial year (as defined in Section 742 of the Companies
     Act 1985) or other accounting reference period of the Company ending on or
     before the date of issue nor for dividends or other distributions declared,
     resolved upon or publicly announced before the date of exercise of this
     Warrant.

9.   Adjustment of subscription rights attached to this Warrant

     (a)  If, on a date (or by reference to a record date) on or before the
          Final Exercise Date, the Company allots any fully paid Ordinary Shares
          by way of capitalisation of profits or reserves to holders of the
          Ordinary Shares or effects any consolidation or sub-division of the
          Ordinary Shares on such a date, the number and/or nominal value of
          Ordinary Shares to be subscribed on any subsequent exercise of
          subscription rights attached to this Warrant will as from such date
          (or record date) be increased or, as the case may be, reduced in due
          proportion and the Warrant Price will be adjusted accordingly. On any
          such capitalisation, consolidation or sub-division the auditors for
          the time being of the Company shall certify the appropriate
          adjustments and, within twenty-eight days thereafter, notice will be
          sent to the Registered Holder together with a Warrant certificate in
          respect of any additional Ordinary Shares for which the Registered
          Holder is entitled to subscribe in consequence of such adjustments,
          fractional entitlements being ignored.


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     (b)  If, on a date (or by reference to a record date) on or before the
          Final Exercise Date the Company makes any offer or invitation (whether
          by way of rights issue or otherwise but not being an offer to which
          paragraph 10(b) below applies) to the holders of the Ordinary Shares,
          or any offer or invitation (not being an offer to which paragraph
          10(c) below applies) is made to such holders otherwise than by the
          Company, then the Company shall, so far as it is able, procure that at
          the same time the same offer or invitation is made to the Registered
          Holder as if its subscription rights under this Warrant had been
          exercisable and had been exercised on the day immediately preceding
          such date (or record date) on the basis then applicable.

10.  So long as any subscription rights attached to this Warrant remain
     exercisable, save with agreement or sanction pursuant to paragraph 11
     below:

     (a)  the Company shall:

          (i)   keep available for issue sufficient authorised but unissued
                share capital to satisfy in full all subscription rights
                attached to this Warrant remaining exercisable;

          (ii)  not make any allotment of fully paid Ordinary Shares by way of
                capitalisation of profits or reserves on or before the Final
                Exercise Date unless at the date of such allotment the directors
                have authority for the purposes of section 80 of the Companies
                Act 1985 to grant the additional rights to subscribe to which
                the Registered Holder would by virtue of paragraph 9(a) above be
                entitled in consequence of such capitalisation; and

          (iii) not make any offer or invitation as is referred to in paragraph
                9(b) above to the holders of Ordinary Shares unless:

               (aa) where such offer or invitation involves the allotment of
                    relevant securities (as defined in section 80 of the
                    Companies Act 1985) the directors shall have authority for
                    the purposes of that section to allot any such securities as
                    may require to be allotted to the Registered Holder in
                    consequence of the Company making the same offer or
                    invitation to the Registered Holder in accordance with
                    paragraph 9(b) above; and


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               (bb) section 89(1) of such Act shall have been disapplied to the
                    extent (if any) necessary to enable the Company to make such
                    offer or invitation to the Registered Holder and to make any
                    allotment pursuant thereto;

     (b)  if at any time before the Final Exercise Date an offer or invitation
          is made by the Company to the holders of Ordinary Shares for the
          purchase by the Company of any of its Ordinary Shares, the Company
          shall simultaneously give notice thereof to the Registered Holder and
          the Registered Holder shall be entitled, at any time while such offer
          or invitation is open for acceptance, to exercise its subscription
          rights under this Warrant on the terms on which the same could have
          been exercised (subject to any adjustment pursuant to paragraph 9(a)
          above) so as to take effect as if it had exercised such rights on the
          day immediately preceding the record date for such offer or invitation
          and the Company shall procure that any such offer or invitation is
          extended to any Ordinary Shares arising from such exercise;

     (c)  if at any time an offer is made to all the holders of Ordinary Shares
          (or all such holders other than the offeror) to acquire the whole or
          any part of the issued ordinary share capital of the Company and the
          Company becomes aware that as a result of such an offer the right to
          cast a majority of the votes which may ordinarily be cast on a poll at
          a General Meeting of the Company has or will become vested in the
          offeror, the Company shall give notice to the Registered Holder of
          such vesting within fourteen days of its becoming so aware, and the
          Registered Holder shall be entitled, at any time within the period of
          thirty days immediately following the date of such notice but before
          the Final Exercise Date, to exercise its subscription rights under
          this Warrant on the terms on which the same are then exercisable
          (subject to any adjustment pursuant to paragraph 9(a) above) so as to
          take effect as if it had exercised its rights on the day immediately
          preceding the record date for such offer, and the Company shall use
          its best endeavours to ensure that such offer is extended to any
          Ordinary Shares arising from such exercise (and the publication of a
          scheme of arrangement under section 425 of the Companies Act 1985
          providing for the acquisition by any person of the whole or any part
          of the issued Ordinary share capital of the Company shall be deemed to
          be the making of an offer for the purposes of this sub-paragraph (c));


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     (d)  if before the Final Exercise Date an order is made or an effective
          resolution is passed for winding up the Company the Registered Holder
          will (if, in such winding up and on the basis that all subscription
          rights attached to this Warrant then unexercised had been exercised in
          full and the subscription moneys therefor had been received in full by
          the Company there shall be a surplus available for distribution
          amongst the holders of the Ordinary Shares which on such basis would
          exceed in respect of each Ordinary Share a sum equal to the Warrant
          Price) be treated as if immediately before the date of such order or
          resolution its subscription rights under this Warrant had been
          exercisable and had been exercised in full, on the terms on which the
          same could then have been exercised (subject to any adjustment
          pursuant to paragraph 9(a) above) so as to take effect as if it had
          exercised such rights on the day immediately preceding the date of
          such order or resolution and shall accordingly be entitled to receive
          out of the assets available in the liquidation pari passu with the
          holders of the Ordinary Shares such a sum as it would have received
          had it been the holder of the Ordinary Shares to which it would have
          become entitled by virtue of such subscription after deducting a sum
          per Ordinary Share equal to the Warrant Price; subject to the
          foregoing all subscription rights shall lapse on liquidation of the
          Company.

11.  If any question shall arise in regard to the nature or extent of any
     adjustment to be made to the Warrant Price or the number of Ordinary Shares
     subject to this Warrant pursuant to any of the provisions of paragraph 9
     above, the same shall be referred for determination either by some person,
     firm or company nominated jointly for such purpose by the Company and the
     Registered Holder or, failing agreement on such joint nomination, by a firm
     of Chartered Accountants to be nominated at the request of the Company or
     the Registered Holder by the President for the time being of the Institute
     of Chartered Accountants in England and Wales and so that any person, firm
     or company so nominated shall be deemed to be acting as an expert or
     experts and not as an arbitrator or arbitrators and his or their decision
     shall be binding on all concerned. The costs of such determination shall be
     divided equally between the Company and the Registered Holder.

12.  All or any of the rights for the time being attached to this Warrant may
     from time to time (whether or not the Company is being wound up) be altered
     or abrogated with the consent in writing both of the Company and of the
     Registered Holder.

13.  This Warrant is not transferable. If the Registered Holder purports to
     transfer this Warrant in whole or in part to any other person this Warrant
     shall cease to have effect and shall become null and void.


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